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10-02-2021, 09:09 PM | #89 | |||
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But yes running a slightly different crank pulley and tune to help with the altitude gap. I'm not quite stage 2 as I'm on original Harrop kit injectors. Run drives very well!!!
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DrFerry6731.50 |
10-02-2021, 10:48 PM | #90 |
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Gotcha, looks great. What does it put down without altitude correction?
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10-03-2021, 09:29 AM | #91 |
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Are you asking what my stage 1 dyno pull was? I can find that. It was in the mid 400's on a Mustang dyno.
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10-03-2021, 04:19 PM | #92 | ||||
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If the crank pulley were a different diameter I'm not sure what effect that would have on drive belt speed (or on the ancillaries pulley speeds). Is yours bigger or smaller diameter than the OEM crank pulley diameter? Can you give us a tad more details about the secret sauce to generating more boost and the tune provider? Thanks for indulging me? PS: Your strategy sounds similar to Mike Benvo's stage 2 approach sans the bigger injectors.
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10-03-2021, 09:30 PM | #93 | |||||
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10-03-2021, 09:39 PM | #94 | ||||||
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10-04-2021, 01:29 AM | #95 | |||||||
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DrFerry6731.50 |
11-21-2021, 04:23 PM | #97 |
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Any updates?
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12-03-2021, 05:48 PM | #101 | |
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Easily could feel the snappier throttle response right after installation. In my case, it seems like that tapers off in a week or so.
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08-30-2022, 09:13 AM | #102 |
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My Harrop SC Kit is For Sale:
https://www.m3post.com/forums/showthread.php?t=1950645
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11-09-2022, 10:16 AM | #103 |
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Max Boost 4psi, Looking for Help/Suggestions
Hello, I don't post much, but I am having an issue that is apperantly quite diffiult to solve. I am not looking for any bashing, just constructive feedback please if you have had a similar issue. My purchase of a very early 2015 Harrop from DrFerry went very smoothly with no issues, but the install has not gone well after the initial install. Intial install was completed in a day and car was idling fine. I should say just a couple nagging issues persist, because car starts and runs fine, albeit pegs at a steady 4 psi and small but noticeable breakup from 5-6K rpm. Install is being done at my local shop Performance Technic and lots of support from Mike at BPM. They have installed quite a few of these kits and this is the first one to exhibit such issues. Mike has sent me a new Harrop controller but unfortunately this did not help. They have checked three ways to Sunday for a normal so to speak "boost leak" and can't find anything. Manual boost gauge builds boost to 4psi nearly instantly on WOT and just sits there to redline. Electronic BOV has been recalibrated numerous times. Needless to say this is draining by wallet like a thousand paper cuts and yes more than a new kit would have cost now. I don't need to hear about that, but would love to hear if anyone else experienced a similar issue and what solved it. Thank you!
New things installed: Throttle actuators Idle controller fuel tank vent valve plugs VC gaskets Flow matched big blues S/C belt Gatorback air filter 2009 E93 78K miles, DCT Ran beautiful previously: EVenturi Quad resonated X-pipe Vanguard Ti exhaust Ohlins Coilovers BBS Fi's BPM Tune BPM DCT Tune Dinan Power Pulley |
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11-09-2022, 10:34 AM | #104 | |
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DrFerry Do you have any old dyno sheets?
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11-09-2022, 10:45 AM | #105 | ||
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My feeling is there is a boost leak or the bypass valve is not being closed completely.
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11-09-2022, 10:51 AM | #106 | |||
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Last edited by RUG8RB8; 11-09-2022 at 12:05 PM.. Reason: Adding Short Video of Actuator Motion |
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11-09-2022, 04:57 PM | #107 |
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I'm catless and I never tested PSI but based on the cars that end up in my rear view mirror I doubt I'm not building at least 90% boost. Pretty sure the harrop time attack car only has 2 100cpsi cats as there car uses the Akra gt4 exhaust.
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11-09-2022, 05:02 PM | #108 | |
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. Harrop Dyno runs with M3 World X-Pipe, high flow cats and Pipercross Air Filter . . Harrop Dyno run with OEM Exhaust compared to Stock dyno run . . My Dyno Runs Data Table With Dynojet Conversion . . cchen9_ Harrop Dyno runs on a Mustang Dyno
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11-09-2022, 05:52 PM | #109 |
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Those are absolutely in line with my dyno results years ago with stage 1 on mustang dyno.
Takeaway is it was building boost to > 6psi. So there must be a leak. The individual rubber boots that the plenum snugs into have been known to leak without the Harrop and other FI kits. Can you smoke test under boost pressure?
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11-09-2022, 06:18 PM | #110 | ||||
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measurement displayed digitally) but the boost would immediately fall off. Very hard to visualize each boot unless you are inspecting with a flexible fiber optic camera. I picked one up for $50 and it's been handy for other jobs. You also want to calibrate/zero your boost gauge if not done already. When I moved the Harrop from my e93 to the e90, I had to replace 4-5 of the throttle body rubber boots. all my boots were properly aligned on the Harrop this time but discovered that one of the metal crimp bands holding the boot on each individual throttle body wasn't tightened properly, and that was causing boost leak. The boot stayed connected to the Harrop unit and pulled right off the engine when I lifted it up to inspect. I think throttle body is technically an incorrect description but I'm referring to the piece feeding air into each engine cylinder, and the rubber boot bridging that piece to the plenum or supercharger unit Lastly the worm-screw hose clamps seem to loosen after the initial installation and I find that they need to be re-torqued to spec 1-2 weeks later. |
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