Official Harrop TVS1740 Supercharger Thread

[eternallx]

Originally Posted by Bakerboy

Was your symptoms odd loss of power when on full load at high rpm? Miss then power continues?

I have ordered a full set now after identifying cylinder 3 was problematic by running diagnostics and changed just the one.

Things have improved but still get it a bit. So I'm going to change them all.

Felt like it was NA or worse at full throttle, when its really had its kinda of like a on/off fuel cut

[bvrider1]

Am I missing something? Is this thing ready for the general public ?

Originally Posted by Icecreamfoo

I can confirm this. After asking for like a month or two, I finally had the chance to ride in a stage II Harrop a couple nights ago. Tuned F10, AWD F90, those are all very, nutty fast cars, but the rush from this stage II, paired with the blower whine (which I personally love), is something else. There was no less than a dozen pulls, in 1st gear, in 2nd gear, in 3rd gear, and near top-end, the power just pours on in each and one of those repeated pulls. And as violent as the thrust was, the delivery felt surprisingly smooth (I dont know how else to describe it) from low end all the way up to redline with no signs of hesitation or hiccups... no wonder that other car ate a hellcat, as I'm still marveling at the experience days after. Hats off to all you stage II owners out there, I am truly envious

[8500RPM]

Originally Posted by bvrider1

Am I missing something? Is this thing ready for the general public ?

I'm sure there are a few beta testers out there in the US. BPM's instagram has several videos of their shop car E90 with a Stage 2 Harrop racing airstip, driving through traffic, pictures of it in the canyons. Probably at final stages of testing and QC.

[bmwfst1]

Originally Posted by M3Post

NGK Racing Iridium R2556B-9

I put those plugs in my car along with new coils and my car had misfires. My car is NA. I went back to stock plugs and no misfires.

[BPMSport]

Originally Posted by bvrider1

Am I missing something? Is this thing ready for the general public ?

In discussions with Harrop about integrating some additional controls between the Bypass controller and factory DME. Also changed the seats in our car as tuning from the race seats was extremely uncomfortable.

The Stage II setup is extremely fast but I find it to be a bit much, so the intention here is to use this pulley for higher altitude vehicles and step it down for cars at sea level and with 91 octane.

[Richbot]

Got dammit where did you find a set of decent black F80 seats I'm striking out

[Bakerboy]

Originally Posted by BPMSport

In discussions with Harrop about integrating some additional controls between the Bypass controller and factory DME. Also changed the seats in our car as tuning from the race seats was extremely uncomfortable.

The Stage II setup is extremely fast but I find it to be a bit much, so the intention here is to use this pulley for higher altitude vehicles and step it down for cars at sea level and with 91 octane.

Stage 2 and stage 3, let the customer decide maybe?

Also are any of the development cars DCT, are they holding the power ok?

[8500RPM]

Originally Posted by BPMSport

In discussions with Harrop about integrating some additional controls between the Bypass controller and factory DME. Also changed the seats in our car as tuning from the race seats was extremely uncomfortable.

The Stage II setup is extremely fast but I find it to be a bit much, so the intention here is to use this pulley for higher altitude vehicles and step it down for cars at sea level and with 91 octane.

Good Day To You Sir,

May I inquire about the clutch on your shop car. Is a stock 6spd clutch able to handle Stage2 Harrop?

Also we you be able to swap upper pulleys to decrease boost from Stage2? Say you don't want so much power for a track day and you want to throw a large upper pulley on there.

Very excited!

[Mvy]

Those seats are gorgeous. I am plenty happy with stage 1 and dont want to go further in case anyone cares ;-). Three years now as a daily driver and its been plenty for a sea level, stock clutch street car. Oh, and I don't want to get arrested for speeding, just way too easy as it is.

[8500RPM]

Originally Posted by Mvy

Those seats are gorgeous. I am plenty happy with stage 1 and dont want to go further in case anyone cares ;-). Three years now as a daily driver and its been plenty for a sea level, stock clutch street car. Oh, and I don't want to get arrested for speeding, just way too easy as it is.

I'm worried about stock clutch on Stage2. Stock is so nice and smooth would hate to lose it.

[BPMSport]

No issues with stock manual clutch. Good point on swapping top pulley instead of crank pulley to step down the power. I will look into this.

[nemesis_X]

Was looking to install either the D088 or CSF Rad + Oil Coolers.
Are they a perfect fit or some cutting is required? Considering there is already an additional adrad radiator from the Harrop Kit.

[nycplumber]

Originally Posted by nemesis_X

Was looking to install either the D088 or CSF Rad + Oil Coolers.
Are they a perfect fit or some cutting is required? Considering there is already an additional adrad radiator from the Harrop Kit.

Pretty sure you can't install the oil cooler on the harrop kit eternallx would know

[eternallx]

Originally Posted by nycplumber

Pretty sure you can't install the oil cooler on the harrop kit eternallx would know

From what ebisu8 said DO88 oil cooler fits. I just bought one but will try to install sometime next week.

[ebisueight]

Originally Posted by eternallx

From what ebisu8 said DO88 oil cooler fits. I just bought one but will try to install sometime next week.

That's right. I have the full do88 lineup including the transmission cooler on my 6MT. It's kept me cool during the hot humid summer in Atlanta.

[nemesis_X]

Originally Posted by ebisu8

That's right. I have the full do88 lineup including the transmission cooler on my 6MT. It's kept me cool during the hot humid summer in Atlanta.

That is great news. I'm on a DCT , Do not think there's a difference in terms of fitment I suppose?

Did the bigger radiator + oil cooler bring down the max temps or did it just allow a faster recovery? My latest ( minor issue ) is when driving around leisure on a hot humid afternoon ( 35 Deg C / 60% Humidity ) , Temps slowly creep up to around 110 Deg C when it usually is around 90+C

Pushing it hard in such weather would guarantee me much higher oil temps.

[ebisueight]

Originally Posted by nemesis_X

That is great news. I'm on a DCT , Do not think there's a difference in terms of fitment I suppose?

Did the bigger radiator + oil cooler bring down the max temps or did it just allow a faster recovery? My latest ( minor issue ) is when driving around leisure on a hot humid afternoon ( 35 Deg C / 60% Humidity ) , Temps slowly creep up to around 110 Deg C when it usually is around 90+C

Pushing it hard in such weather would guarantee me much higher oil temps.

It does keep them down, I've never had it go above 225 F, in 90+ F with close to 100% humidity.

Everything fits nicely, the only thing that needed trimming was the CF shroud for the trans mission cooler. It was to ensure the hoses had enough room to pass through. For me I didn't care because that piece isn't a "pretty" that needs to be shown off.

[Bakerboy]

Originally Posted by BPMSport

Use stock plugs and if there are issues it must be the coils, injectors, or a fuel supply/delivery issue (barring anything cylinder specific/hardware). Ours pulls hard to redline hard with zero hiccups and Stage II.

New plugs and coils and all sorted.

Love that silky power that just pours out.

Any updates on stage 2?

[BPMSport]

Originally Posted by eternallx

From what ebisu8 said DO88 oil cooler fits. I just bought one but will try to install sometime next week.

This cooler does fit, the Stage II car in Colorado on the airstrip has this cooler fitted. On another note, I drove a customers stroked and supercharged ESS625 kit last week, and while the kit is very impressive at the upper RPM's, there is absolutely NO comparison below 6,500RPM. Took him for a ride in ours and he was extremely impressed.

Short video from a customer test drive here:

[BlackPhoenix]

Happy holidays. PM'd, ready to pull the trigger!

[Bakerboy]

Is there any prices for the stage 2 kit upgrade yet?


It looks a very impressive jump but what kind of ball park are we talking?

[Nick//M3]

Yes ca we start getting ball park # on gen 2 please