Official Harrop TVS1740 Supercharger Thread

[BPMSport]

Hey everyone - our reply on this thread is long overdue and will be posting as soon as we clear up pending jobs.

FYI - The tune is very conservative and has been tested in 40C+ environments and lap after lap on extremely challenging tracks. There is definitely more power that can be had, but until the higher power level software undergoes a multitude of tests to ensure it's safety on a long term level, we prefer to err on the side of safety and longevity.

Using another tune is strongly ill advised and against the warranty policy on the kit.

[jamba]

what are you guys using for gauges? My two measurement priorities are AFR and boost.

I know the common route is Awron but I don't want to spend that much. There seems to be an ACM version of the P3 gauges but ACM's site is down.

Does the Harrop manifold have a pre-drilled line or hole in the manifold to tap into? Or do I need to get creative?

[liquidsmoke]

Hi,
If I buy a kit direct from harrop (I’m in the uk, and the uk dealer doesn’t reply to me at all), will my kit have the bpm tune included or is the tune I get from harrop different? We have 99ron fuel here in the uk. Thanks!

[FiveOhFour]

Originally Posted by M3Post

Yes it does. There is port on the back left corner of the manifold plenum.

Hey has there been a development, has the long discussed Stage 2 Harrop Kit come out or what? Glad to see there’s activity here still, stage 2 or no I feel this kit & the effort put into it are under appreciated by many commenters here. It’s an odd thing to me, the thought of someone who appreciates the e92 M3 but is also somehow laser focused on only the bigger peak HP/Torque numbers.

Idk I guess to me not only it a proper supercharger like this far more suited for the e92’s power delivery, but...the difference in the amount of work they had to put into R&D & just getting the design & packaging right & as OEM as possible is no minor detail, so acting like these off the shelf Vortec based Centrigual Superchargers/“Belt driven turbos” that are practically a slap it on affair design wise are the default answer just because they have a bigger #’s & HP per $ is just a strange view to see from so many people who claim they love the e92 M3 Engine. If so, why not get the FI kit that retains the stock power curve and just gives you more of it everywhere instead of the turbo with the identity crisis :P

[BPMSport]

Harrop has been running Stage II with an aftermarket standalone for awhile - the goal here is obviously to get it calibrated perfectly with the stock DME.

I apologize for the delay with Stage II - it's definitely going to happen at some point.. Resources have to be allocated appropriately - with the F and G series OBD flashing release, it didn't make sense to prioritize Stage II as the market is only a fraction in size in comparison.

That said, the larger Stage II injectors have been installed in our car for quite some time, and one E85 system has been tested, with another one set to be tested next. The MAP pressure sensor was also changed and is being tested as well.

There is no question that the Harrop kit's torque delivery is quite substantial in comparison to other similarly rated centri kits. The Harrop kit will shift the torque curve upward, while the non positive displacement kits will have a progressive rise in comparison to the stock curve. That is the beauty of this kit - the torque you want is there in much more of the RPM spectrum.

Our Harrop M3 was shot by a photographer the other day - will have to post some more photos up in the media section next week. New PS4S were fitted as the PSS just would not stick. It was impossible to log the lower gears with the previous tires as the RPM's would shoot to redline in a blink from the wheelspin. Here are a few shots for now:

[DukeofAlexandria]

Originally Posted by BPMSport

Harrop has been running Stage II with an aftermarket standalone for awhile - the goal here is obviously to get it calibrated perfectly with the stock DME.

I apologize for the delay with Stage II - it's definitely going to happen at some point.. Resources have to be allocated appropriately - with the F and G series OBD flashing release, it didn't make sense to prioritize Stage II as the market is only a fraction in size in comparison.

That said, the larger Stage II injectors have been installed in our car for quite some time, and one E85 system has been tested, with another one set to be tested next. The MAP pressure sensor was also changed and is being tested as well.

There is no question that the Harrop kit's torque delivery is quite substantial in comparison to other similarly rated centri kits. The Harrop kit will shift the torque curve upward, while the non positive displacement kits will have a progressive rise in comparison to the stock curve. That is the beauty of this kit - the torque you want is there in much more of the RPM spectrum.

Our Harrop M3 was shot by a photographer the other day - will have to post some more photos up in the media section next week. New PS4S were fitted as the PSS just would not stick. It was impossible to log the lower gears with the previous tires as the RPM's would shoot to redline in a blink from the wheelspin. Here are a few shots for now:

Everything I've read about BMP (and Harrop) tells me that they really do care about reliability, drive-ability, and getting things engineered correctly the first time, so this doesn't surprise me that it's taking a good amount of time. Maybe a bit too much in some peoples opinion, but engineering for a small company takes a lot of effort, especially if it's such a niche market like it is right now.

Thanks for the update BPM, appreciate the hard work and like I've discussed in the past (along with others), there is a very strong following of wanting to see a Stage II come through.

Good luck and hope to hear soon!

[Properstyle]

Originally Posted by BPMSport

Harrop has been running Stage II with an aftermarket standalone for awhile - the goal here is obviously to get it calibrated perfectly with the stock DME.

I apologize for the delay with Stage II - it's definitely going to happen at some point.. Resources have to be allocated appropriately - with the F and G series OBD flashing release, it didn't make sense to prioritize Stage II as the market is only a fraction in size in comparison.

That said, the larger Stage II injectors have been installed in our car for quite some time, and one E85 system has been tested, with another one set to be tested next. The MAP pressure sensor was also changed and is being tested as well.

There is no question that the Harrop kit's torque delivery is quite substantial in comparison to other similarly rated centri kits. The Harrop kit will shift the torque curve upward, while the non positive displacement kits will have a progressive rise in comparison to the stock curve. That is the beauty of this kit - the torque you want is there in much more of the RPM spectrum.

Our Harrop M3 was shot by a photographer the other day - will have to post some more photos up in the media section next week. New PS4S were fitted as the PSS just would not stick. It was impossible to log the lower gears with the previous tires as the RPM's would shoot to redline in a blink from the wheelspin. Here are a few shots for now:

Why not just get some r888 for that thing stop messing around with the boo boo tires lol...

[Soden82]

Any timeframe on when we may be expecting a stage II kit?

[BPMSport]

Originally Posted by DukeofAlexandria

Everything I've read about BPM(fixed) (and Harrop) tells me that they really do care about reliability, drive-ability, and getting things engineered correctly the first time, so this doesn't surprise me that it's taking a good amount of time. Maybe a bit too much in some peoples opinion, but engineering for a small company takes a lot of effort, especially if it's such a niche market like it is right now.

Thanks for the update BPM, appreciate the hard work and like I've discussed in the past (along with others), there is a very strong following of wanting to see a Stage II come through.

Good luck and hope to hear soon!

Thank you!

Originally Posted by Properstyle

Why not just get some r888 for that thing stop messing around with the boo boo tires lol...

Not interested in having to warm the tires as the car is daily driven on occasion. We have a couple customers with F10 M5 and R888 and the tires are pretty noisy as well, another turn off. This was a happy medium between traction and not having these other trade offs. Traction is pretty good now once the tires are warm and if the road conditions and temperature are ideal. I'm sure once we finish with E85 and at higher boost this will go out the window, but it was an educated decision to stick with these tires.

Originally Posted by Soden82

Any timeframe on when we may be expecting a stage II kit?

Time frame is open ended. Don't end to make promises that can't be adhered to due to unforeseen circumstances, events, current load, other developments etc..

We did have some time today to play with an E10 Mix at 11.8 AFR and found that we are at 65-68% of injector capacity with Stage II injectors. The next step will be determining the limits of the fuel pump and ascertaining the proper ratio with Stage I and max E85 fuel mixture, and then Stage II with a reduced E85 percentage capability. We want to retain the stock pump whether it be on Stage I or II. There is certainly plenty of injector left to move forward.

[Properstyle]

Originally Posted by BPMSport

Thank you!



Not interested in having to warm the tires as the car is daily driven on occasion. We have a couple customers with F10 M5 and R888 and the tires are pretty noisy as well, another turn off. This was a happy medium between traction and not having these other trade offs. Traction is pretty good now once the tires are warm and if the road conditions and temperature are ideal. I'm sure once we finish with E85 and at higher boost this will go out the window, but it was an educated decision to stick with these tires.



Time frame is open ended. Don't end to make promises that can't be adhered to due to unforeseen circumstances, events, current load, other developments etc..

We did have some time today to play with an E10 Mix at 11.8 AFR and found that we are at 65-68% of injector capacity with Stage II injectors. The next step will be determining the limits of the fuel pump and ascertaining the proper ratio with Stage I and max E85 fuel mixture, and then Stage II with a reduced E85 percentage capability. We want to retain the stock pump whether it be on Stage I or II. There is certainly plenty of injector left to move forward.

Don’t think I’ve ever warmed up my r888rs before getting on them 30 psi 5mins in to drive seems to be enough. Normally have to wait longer for the car to warm up then anything. Hated the ps tires. No traction from a 50mph pull in 2nd. And doing a 30 in 1st gear was out of the question. Don’t think I can hear my tires over the exhaust to be honest lol.


Have you looked in to the ID 1050cc for the m3 plenty of injector and believe in e85 fuel pump would keep up until you were in the 650 range with e85 burning in a leaner area of the afr compared to pump 93.

[jamba]

look what arrived in the mail today

[DukeofAlexandria]

Originally Posted by jamba

look what arrived in the mail today

[Pro-AM3]

Originally Posted by M3Post

Pro-AM3 what's the better real world E90/92 M3 SC performance characteristics (set up) for a Road Racing Circuit?

an air-air based rotrex kit. the back-back hot lapping performance has shown this time and time again yet this forum loves to scream ess or harrop for some reason

[BPMSport]

Here are some awesome videos of a BPM Harrop Charged M3 a customer sent us from a time trial racing event in Colombia, enjoy

[FiveOhFour]

Originally Posted by BPMSport

Harrop has been running Stage II with an aftermarket standalone for awhile - the goal here is obviously to get it calibrated perfectly with the stock DME.

I apologize for the delay with Stage II - it's definitely going to happen at some point.. Resources have to be allocated appropriately - with the F and G series OBD flashing release, it didn't make sense to prioritize Stage II as the market is only a fraction in size in comparison.

That said, the larger Stage II injectors have been installed in our car for quite some time, and one E85 system has been tested, with another one set to be tested next. The MAP pressure sensor was also changed and is being tested as well.

There is no question that the Harrop kit's torque delivery is quite substantial in comparison to other similarly rated centri kits. The Harrop kit will shift the torque curve upward, while the non positive displacement kits will have a progressive rise in comparison to the stock curve. That is the beauty of this kit - the torque you want is there in much more of the RPM spectrum.

Our Harrop M3 was shot by a photographer the other day - will have to post some more photos up in the media section next week. New PS4S were fitted as the PSS just would not stick. It was impossible to log the lower gears with the previous tires as the RPM's would shoot to redline in a blink from the wheelspin. Here are a few shots for now:

I’ve got a few posts/comments to reply to but for now am wondering if you have a build page for that car?

Also to the thread in general, I recently won a ebay auction for a M3, the second time it was listed, and the guy refused to sell it, he said his wife would kill him, he was in denial about the fact his car had a history report that showed it had been sold with frame damage at auction at one point, and he was sure that if he listed it again and was upfront about this detail he had no idea about before, that he would get more than the $20k the auction brought the first time around. Of course it didn’t,my bid won and was lower than the first one.

This guy was also a bmw master mechanic, possibly the saddest part of this all. What would you do? Drop it? Raise hell?

[FiveOhFour]

Originally Posted by BPMSport

Here are some awesome videos of a BPM Harrop Charged M3 a customer sent us from a time trial racing event in Colombia, enjoy

Epic, my dream for forced induction is that I could turn it on or off completely. I’d love to be able to have a NA E92 when I want that and “activate” the boost when I want that

[BPMSport]

Originally Posted by FiveOhFour

Epic, my dream for forced induction is that I could turn it on or off completely. I'd love to be able to have a NA E92 when I want that and "activate" the boost when I want that

Technically you can, unplug the bypass and we can make you a tune to flash in with it disconnected - will be NA again. Obviously this isn't an ideal setup

[8500RPM]

Originally Posted by BPMSport

Thank you!



Not interested in having to warm the tires as the car is daily driven on occasion. We have a couple customers with F10 M5 and R888 and the tires are pretty noisy as well, another turn off. This was a happy medium between traction and not having these other trade offs. Traction is pretty good now once the tires are warm and if the road conditions and temperature are ideal. I'm sure once we finish with E85 and at higher boost this will go out the window, but it was an educated decision to stick with these tires.



Time frame is open ended. Don't end to make promises that can't be adhered to due to unforeseen circumstances, events, current load, other developments etc..

We did have some time today to play with an E10 Mix at 11.8 AFR and found that we are at 65-68% of injector capacity with Stage II injectors. The next step will be determining the limits of the fuel pump and ascertaining the proper ratio with Stage I and max E85 fuel mixture, and then Stage II with a reduced E85 percentage capability. We want to retain the stock pump whether it be on Stage I or II. There is certainly plenty of injector left to move forward.

The more I think about supercharging the more I like the idea of getting a Harrop. You guys haven't tried out the new Radium Engineering drop in fuel pump/hanger? That should solve fuel issues for Full E85 Supercharger setups no?

[e90335e36m3]

What are the recommended labor hours for installation of this supercharger? Are there authorized installers in NC that follow that guidance? I had a quote to install a ESS-VT 625 for $2,500, which is nuts.

[BPMSport]

Originally Posted by 8500RPM

The more I think about supercharging the more I like the idea of getting a Harrop. You guys haven't tried out the new Radium Engineering drop in fuel pump/hanger? That should solve fuel issues for Full E85 Supercharger setups no?

Have not heard about this at all - feel free to send a link/details as it's something we'd be interested in exploring provided the fuel system limits are reached.

[BPMSport]

Originally Posted by e90335e36m3

What are the recommended labor hours for installation of this supercharger? Are there authorized installers in NC that follow that guidance? I had a quote to install a ESS-VT 625 for $2,500, which is nuts.

Approx 10 Hours, it should run between $1,000 and $1,500.

In NC we would recommend Atlas Motor Company, you can contact Dave at 919-831-2424.

Thanks and happy holidays everyone... also, we're going to offer 10% off kits for the holidays, please contact us if you wish to redeem this offer.

[dj_dub]

Originally Posted by BPMSport

Thanks and happy holidays everyone... also, we're going to offer 10% off kits for the holidays, please contact us if you wish to redeem this offer.

Can I purchase extra belts for the Harrop through you?