Official Harrop TVS1740 Supercharger Thread

Mvy · 01-21-2021, 07:00 PM

4 years deep now with the Harrop, over 30k miles and loving the stage 1 every day I drive.

nemesis_X · 01-26-2021, 08:45 AM

Hey Everyone,

So recently I've noticed that my car's voltage was reading lower than usual, but only after starting up and moving off ( Starts and holds at 14.XV then goes to 13.6V ).

At the same time heard a new noise coming thru, Thought might be the belts, so popped the hood and heard this.

Cannot be sure where its really coming from , but does sound like its from the bypass valve actuator. Just wondering if anyone has encountered this before?
Absolutely

Fastalpine · 01-26-2021, 08:52 AM

Quote:

Originally Posted by BPMSport

From this weekend,

VS a Stage II F10 M5 with Downpipes (approx 750HP).

So when can I purchase Stage 2?

DukeofAlexandria · 01-26-2021, 09:24 AM

Quote:

Originally Posted by Fastalpine

So when can I purchase Stage 2?

I think I speak for everyone here, when I say STFU and go purchase something else if you're waiting on Stage 2 from Mike and the BPM Sport gang.

He's gone over this time and time again, to the point of being driven off the forums for a few months because people felt entitled to try and pressure him into the Stage 2 hype.

Go away.

-Duke

Fastalpine · 01-26-2021, 09:41 AM

Quote:

Originally Posted by DukeofAlexandria

I think I speak for everyone here, when I say STFU and go purchase something else if you're waiting on Stage 2 from Mike and the BPM Sport gang.

He's gone over this time and time again, to the point of being driven off the forums for a few months because people felt entitled to try and pressure him into the Stage 2 hype.

Go away.

-Duke

It was a joke, Duke... calmly walk away from the keyboard and woosaaa! LOL!

DukeofAlexandria · 01-26-2021, 10:04 AM

Quote:

Originally Posted by Fastalpine

It was a joke, Duke... calmly walk away from the keyboard and woosaaa! LOL!

And yet, those same jokes drove him and others off the forum. Words mean things, and they have consequences. Sorry if you didn't know the history of this, but not sorry for calling you, and others out.

-Duke

Fastalpine · 01-26-2021, 10:11 AM

Quote:

Originally Posted by DukeofAlexandria

And yet, those same jokes drove him and others off the forum. Words mean things, and they have consequences. Sorry if you didn't know the history of this, but not sorry for calling you, and others out.

-Duke

If we wants to keep posting awesome videos of Stage 2, then maybe he should not get so offended when people ask to purchase it

DukeofAlexandria · 01-26-2021, 10:40 AM

Quote:

Originally Posted by Fastalpine

If we wants to keep posting awesome videos of Stage 2, then maybe he should not get so offended when people ask to purchase it

Someone else who hasn't read any of the previous posts on how to go about obtaining Stage 2 or updates on it. Any modicum of reading would have already answered your questions but obviously that's too much to ask.

Stay classy and entitled dude.

-Duke

Fastalpine · 01-26-2021, 10:44 AM

Ahhh, the new key word for the USA... entitled. Nice!

ShakeNBake · 01-26-2021, 12:36 PM

If you guys would actually get in touch with Mike, you would know the status of stage 2.

DukeofAlexandria · 01-26-2021, 12:41 PM

Quote:

Originally Posted by ShakeNBake

If you guys would actually get in touch with Mike, you would know the status of stage 2.

Bingo. This has been covered 5-6 times in previous posts and direct posts from Mike himself. Literally reading some of the previous pages will cover this....but some people...

-Duke

DrFerry · 01-26-2021, 07:50 PM

Quote:

Originally Posted by nemesis_X

Hey Everyone,

So recently I've noticed that my car's voltage was reading lower than usual, but only after starting up and moving off ( Starts and holds at 14.XV then goes to 13.6V ).

At the same time heard a new noise coming thru, Thought might be the belts, so popped the hood and heard this.

Cannot be sure where its really coming from , but does sound like its from the bypass valve actuator. Just wondering if anyone has encountered this before?
Absolutely

Possibly a drive belt idler bearing going bad. One of the two right below the snout pulley. I've also got one going out which has been on the car since originally installed over 50K miles ago. See image below.
_

DrFerry · 02-05-2021, 03:09 PM

As of today, 5-Feb-2021, my HARROP SC is no longer making any boost. The bypass valve actuator rod doesn't seem to move anymore. I followed the actuator reinitialize procedure with no luck. Even with the ignition on, and cycling the throttle pedal to WOT a few times, the Actuator rod doesn't move. I'm not sure if it's the HARROP ECU, the Actuator or something else? I have an e-mail into HARROP.
.

DrFerry · 02-05-2021, 05:42 PM

Quote:

Originally Posted by nemesis_X

Cannot be sure where its really coming from , but does sound like its from the bypass valve actuator. Just wondering if anyone has encountered this before?
Absolutely

nemesis_X Any updates? What did it turn out to be causing the noise?

BPMSport · 02-06-2021, 04:45 PM

Quote:

Originally Posted by DrFerry

As of today, 5-Feb-2021, my HARROP SC is no longer making any boost. The bypass valve actuator rod doesn't seem to move anymore. I followed the actuator reinitialize procedure with no luck. Even with the ignition on, and cycling the throttle pedal to WOT a few times, the Actuator rod doesn't move. I'm not sure if it's the HARROP ECU, the Actuator or something else? I have an e-mail into HARROP.
.

If the kit was purchased through BPM, please contact us and we will assist you with resolving this. Thank you.

DrFerry · 02-06-2021, 04:53 PM

Quote:

Originally Posted by BPMSport

If the kit was purchased through BPM, please contact us and we will assist you with resolving this. Thank you.

Yes, I did purchase my Harrop kit from BPMSport. Thank you for your offer to help resolve the issue. I'll forward to you the e-mail I sent to Harrop. Many thanks.

drwankel · 02-08-2021, 04:52 PM

Please document whatever the resolution to these issues are in this thread in case others have the same issue in the future.

DrFerry · 02-09-2021, 03:06 PM

With the help of Mike Benvo from BPMSport, my Harrop SC kit is now making boost once again. The issue turned out to be a loose power wire connection that feeds both the intercooler pump and the bypass valve actuator. Mike asked me a few questions, and then pretty much nailed the root cause right away, because the intercooler pump was not running when the ignition was turned on. At first we thought it might be a bad relay or a fuse.

However, after opening up the DME wiring loom box, and removing the salmon relay (to which the SC kit's hot power wire is connected), the intercooler pump started running again when the ignition was turned back on. Squeezing the connector made the pump turn on and off. So - bingo - it was a lose a connection.

It's all back together now and back making boost once again. Many, many, thanks to Mike Benvo for contacting me, his high degree of professionalism, and his willingness to help me debug the issue. Mike lived up to his great reputation, is very knowledgeable and was also generous with his time and talent. Thanks again Mike.
.
PS:
It should be noted that the shop that installed my kit did NOT solder the connections and instead opted for a quick connect solution. After 5+ years the connection came loose. It can also be seen that the blue quick connect clasp was not closed and seated correctly. The kit installation instructions explicitly call for soldered connections which was not done by the install shop and will need to be redone. In the photos below, both of the SC kit connections for the throttle position sensor and intercooler pump / bypass valve regulator power feed can be seen covered with black electrical tape.
.

BPMSport · 02-09-2021, 10:32 PM

My pleasure Mark, glad I could be of assistance. Those of you that purchased the kit from us, always feel free to reach out for support. We are always here to help you, even if it's five years later as in Marks case

I have put my Supra back in storage and picked up the M3 a couple days ago. Just absolutely love this car. Hoping to tackle the Bosch Motorsport Injector install in the next week or so and dial her up a bit more!

Properstyle · 02-10-2021, 07:24 AM

Quote:

Originally Posted by BPMSport

My pleasure Mark, glad I could be of assistance. Those of you that purchased the kit from us, always feel free to reach out for support. We are always here to help you, even if it's five years later as in Marks case

I have put my Supra back in storage and picked up the M3 a couple days ago. Just absolutely love this car. Hoping to tackle the Bosch Motorsport Injector install in the next week or so and dial her up a bit more!

1050XX time.

Id suggest these wiring adpaters if you don't choose to depin yours

https://www.wiringspecialties.com/in...v6-ev14-uscar/

the non wire still all have issues over time.

drwankel · 02-10-2021, 11:55 AM

Good to hear you got it resolved!

BPMSport · 02-21-2021, 01:36 AM

Quote:

Originally Posted by Properstyle

Quote:

Originally Posted by BPMSport

My pleasure Mark, glad I could be of assistance. Those of you that purchased the kit from us, always feel free to reach out for support. We are always here to help you, even if it's five years later as in Marks case

I have put my Supra back in storage and picked up the M3 a couple days ago. Just absolutely love this car. Hoping to tackle the Bosch Motorsport Injector install in the next week or so and dial her up a bit more!

1050XX time.

Id suggest these wiring adpaters if you don't choose to depin yours

https://www.wiringspecialties.com/in...v6-ev14-uscar/

the non wire still all have issues over time.

These have the correct connectors so no depinning or wiring harnesses needed. I had them built for this application

01-21-2021, 07:00 PM	#947
Mvy Captain 540 Rep 979 Posts Drives: 2008 E93 M3 Join Date: Nov 2014 Location: GA Peach iTrader: (0)	4 years deep now with the Harrop, over 30k miles and loving the stage 1 every day I drive. __________________ Harrop Supercharger, BPM Tune, K/W Coil over kit, Stoptek BBK, Magnaflow exhaust, ear to ear grin everytime I drive...
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01-26-2021, 08:45 AM	#948
nemesis_X New Member 0 Rep 10 Posts Drives: 2010 E93 M3 Join Date: Jun 2019 Location: South East Asia iTrader: (0)	Hey Everyone, So recently I've noticed that my car's voltage was reading lower than usual, but only after starting up and moving off ( Starts and holds at 14.XV then goes to 13.6V ). At the same time heard a new noise coming thru, Thought might be the belts, so popped the hood and heard this. Cannot be sure where its really coming from , but does sound like its from the bypass valve actuator. Just wondering if anyone has encountered this before? Absolutely
	Appreciate 0 Quote

01-26-2021, 10:44 AM	#955
Fastalpine Second Lieutenant 234 Rep 224 Posts Drives: 1995 M3 Join Date: Mar 2015 Location: PA iTrader: (0)	Ahhh, the new key word for the USA... entitled. Nice! __________________ 2012 E91 M Sport 2011 E90 M3 ILB/Speed/6MT/non sunroof
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01-26-2021, 12:36 PM	#956
ShakeNBake Second Lieutenant 59 Rep 209 Posts Drives: E92 ///M3 Join Date: May 2011 Location: CO iTrader: (3)	If you guys would actually get in touch with Mike, you would know the status of stage 2. __________________ "If you ain't first, you're last!"
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02-05-2021, 03:09 PM	#959
DrFerry Field Marshal 6727 Rep 1,829 Posts Drives: '08 E92 M3 Join Date: Jul 2010 Location: Greenville, SC iTrader: (5) Garage List 2008 BMW M3 [5.25] 2015 BMW X5 [4.50]	As of today, 5-Feb-2021, my HARROP SC is no longer making any boost. The bypass valve actuator rod doesn't seem to move anymore. I followed the actuator reinitialize procedure with no luck. Even with the ignition on, and cycling the throttle pedal to WOT a few times, the Actuator rod doesn't move. I'm not sure if it's the HARROP ECU, the Actuator or something else? I have an e-mail into HARROP. . Attached Images __________________ '08 E92 M3 DCT Melbourne Red/Bamboo Beige Leather/EDC/SSP Spec-R DCT clutch discs/SSP Pro-Gold DCT Fluid/Quaife LSD/3:45 Final Drive by Diffs Online/BE Bearings & ARP Bolts/Vibra Technics Engine Mounts/M3 World HFC X-Pipe/LUX H8 180/BPM Sport DCT Tune/PFC Z-Rated Pads/ECS Brass Brake Caliper Bushings/Alex Shop Solid Sub-frame Bushings/Motul 600/Tint Last edited by DrFerry; 02-05-2021 at 03:15 PM..
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02-08-2021, 04:52 PM	#963
drwankel Major 1032 Rep 1,041 Posts Drives: 2012 E92 M3 ZCP, 2021 M340i Join Date: Feb 2016 Location: Bothell, WA iTrader: (0)	Please document whatever the resolution to these issues are in this thread in case others have the same issue in the future.
	Appreciate 1 DrFerry6727.00 Quote

02-09-2021, 03:06 PM	#964
DrFerry Field Marshal 6727 Rep 1,829 Posts Drives: '08 E92 M3 Join Date: Jul 2010 Location: Greenville, SC iTrader: (5) Garage List 2008 BMW M3 [5.25] 2015 BMW X5 [4.50]	With the help of Mike Benvo from BPMSport, my Harrop SC kit is now making boost once again. The issue turned out to be a loose power wire connection that feeds both the intercooler pump and the bypass valve actuator. Mike asked me a few questions, and then pretty much nailed the root cause right away, because the intercooler pump was not running when the ignition was turned on. At first we thought it might be a bad relay or a fuse. However, after opening up the DME wiring loom box, and removing the salmon relay (to which the SC kit's hot power wire is connected), the intercooler pump started running again when the ignition was turned back on. Squeezing the connector made the pump turn on and off. So - bingo - it was a lose a connection. It's all back together now and back making boost once again. Many, many, thanks to Mike Benvo for contacting me, his high degree of professionalism, and his willingness to help me debug the issue. Mike lived up to his great reputation, is very knowledgeable and was also generous with his time and talent. Thanks again Mike. . PS: It should be noted that the shop that installed my kit did NOT solder the connections and instead opted for a quick connect solution. After 5+ years the connection came loose. It can also be seen that the blue quick connect clasp was not closed and seated correctly. The kit installation instructions explicitly call for soldered connections which was not done by the install shop and will need to be redone. In the photos below, both of the SC kit connections for the throttle position sensor and intercooler pump / bypass valve regulator power feed can be seen covered with black electrical tape. . Attached Images __________________ '08 E92 M3 DCT Melbourne Red/Bamboo Beige Leather/EDC/SSP Spec-R DCT clutch discs/SSP Pro-Gold DCT Fluid/Quaife LSD/3:45 Final Drive by Diffs Online/BE Bearings & ARP Bolts/Vibra Technics Engine Mounts/M3 World HFC X-Pipe/LUX H8 180/BPM Sport DCT Tune/PFC Z-Rated Pads/ECS Brass Brake Caliper Bushings/Alex Shop Solid Sub-frame Bushings/Motul 600/Tint Last edited by DrFerry; 02-09-2021 at 03:15 PM..
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02-09-2021, 10:32 PM	#965
BPMSport BimmerPost Supporting Vendor 3387 Rep 7,541 Posts Drives: Harrop M3 / F10 M5 / F82 M4 Join Date: Apr 2008 Location: SoCal iTrader: (9) Garage List 2000 BMW M5 [0.00] 1990 BMW 735i Turbo [0.00] 2008 BMW M3 [7.50] 2015 BMW M3 [0.00] 2015 BMW M5 [0.00]	My pleasure Mark, glad I could be of assistance. Those of you that purchased the kit from us, always feel free to reach out for support. We are always here to help you, even if it's five years later as in Marks case I have put my Supra back in storage and picked up the M3 a couple days ago. Just absolutely love this car. Hoping to tackle the Bosch Motorsport Injector install in the next week or so and dial her up a bit more! Attached Images __________________ -----\| Like us on Facebook \| Instagram \|\| Tuning Information \| Remote Coding \|----- ----Visit us at www.BPMSport.com - Emotion. Driven. \| Toll Free: (888) 557-5133----
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02-10-2021, 11:55 AM	#967
drwankel Major 1032 Rep 1,041 Posts Drives: 2012 E92 M3 ZCP, 2021 M340i Join Date: Feb 2016 Location: Bothell, WA iTrader: (0)	Good to hear you got it resolved!
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