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06-08-2022, 04:56 PM | #1233 |
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Hey guys how is it going ,
I have recently installed my Harrop supercharger it's been a month since it's been installed, since then I haven't felt much of a difference in power compared to NA fBO , and my gauge is reading 0.5-1.5 psi max under throttle I took it in today to get a smoke test to see if there is some kind of boost leak, I hope you guys can help me find out where there issues Is 😭 |
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06-08-2022, 05:01 PM | #1234 |
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Check that the plenum gaskets are seated correctly and tight. Secondly, check that the arm on the bpv opens and closes fully as you move the throttle pedal to 100%. You can check the latter with ignition off and engine off.
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06-08-2022, 05:17 PM | #1235 | ||
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I'll ask the mechanic to make sure everything is sealed tight , are you referring to that metal piece that moves when the throttle pedal is applied? I noticed today it was disconnected so we connected it back and worked but still didn't fix the initial issue . |
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06-08-2022, 07:32 PM | #1236 |
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Just checking, but didn't you mean to say, "ignition on and engine off"? So the Bypass Valve ECU is energized and can see the throttle position signal input being sent to the main DME?
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06-08-2022, 07:52 PM | #1237 | |
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Possible Reasons For Low or No Boost 1) The Bypass Valve Actuator is not operating. Hence, the valve is open. 2) The Bypass Valve ECU is bad, or incorrectly wired. 3) A boost leak exists at one or all of the throttle body boots under the plenum. Bypass Valve Initialization Sequence: Unplug bypass valve actuator i.e. unplug the plastic wiring harness electronic connector plug from the Actuator body, turn the ignition on, wait twenty seconds, turn the ignition off, plug the bypass valve actuator back in, turn the ignition back on. The bypass valve actuator should then relearn its open and closed home positions. The kit should make around 6.0-6.5psi of boost at sea-level elevation. I suggest contacting Mike Benvo BPMSport if these ideas in the list don't fix the issue. It's possible the Bypass Valve Actuator ECU could be bad. .
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Last edited by DrFerry; 06-09-2022 at 09:53 AM.. |
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06-10-2022, 11:08 AM | #1240 | |
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Other things to check is the wiring in the ecu area is connected properly |
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06-10-2022, 12:51 PM | #1241 | |
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06-11-2022, 05:56 PM | #1242 |
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Another install underway with do88 coolers and other goodies. Off with the old and on with the new (and much improved)
Anyone looking for a second hand but excellent condition ESS 625 kit, let us know.
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06-14-2022, 12:28 PM | #1243 | ||
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The problem all along was a boost leak coming from the Idle control valve and the vacuum pipe ! When I replaced them the problem disappeared. Thank you guys for all help and support! 👍 |
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06-14-2022, 02:19 PM | #1244 | |
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06-14-2022, 05:05 PM | #1245 | ||
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06-14-2022, 05:29 PM | #1246 |
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I bought a racebox mini. Who is interested in comparing performance numbers? I think it would be really helpful to see what difference each mod makes. I can ship it to whoever is interested and has data worth logging.
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06-14-2022, 05:44 PM | #1247 | |||
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PS: Just as an FYI: The Harrop SC kit originally came with a BMPSport tune which BPMSport codeveloped with Harrop. BPMSport
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06-15-2022, 09:43 AM | #1248 | |
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06-15-2022, 10:38 AM | #1249 |
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Recall everyone that this is the Official Harrop supercharger thread whose OP is BPMSport , who is the official distributor of Harrop superchargers for the e9x M3 in the US. If wishing to discuss modifications outside of that platform offered by other vendors, perhaps as a courtesy to BMP start a separate thread.
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06-15-2022, 10:57 AM | #1250 | |
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06-15-2022, 02:14 PM | #1251 | ||
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06-18-2022, 02:57 PM | #1252 |
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Hit the dyno today. 458RWHP was the best run on a dynojet. Torque seems lower than I would have expected as well. Seems there is still some power hiding somewhere. Exhaust setup is the factory x pipe with test pipes, and a corsa rear. Tune is the 91 octane BPM harrop tune.
I suppose my next step will be to get a boost gauge on there to ensure I don't have any leaks. |
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06-18-2022, 03:13 PM | #1253 | |
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06-18-2022, 03:29 PM | #1254 | |
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Already been talking to a shop as nobody seems to make the x pipe setup I want, so I may go custom: forward x high quality high flow cats after the x high quality resonators OEM catback connection. |
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