ChrisB Posted November 29, 2004 Share Posted November 29, 2004 When i was at thor they found a problem with the fueling on the car, pete said it wasnt something he had not seen before, it seems to only be a problem inbetween the two turbo's. Ive attached the graph (blue is blitz off, pink is ch1 on controller, blue is ch 4 on the controller) does anyone know what could be causing it ? Chris mods are Greddy 3 Row FMIC TRL FCD Aqamist waterinjection Blitz SUS air filter CW decat pipes Blitz Nurspec Blitz SBCID III + power meter IK24 plugs Standard uk fueling http://www.cliftonmoorracing.co.uk/tmp/Thorairfuel2.jpg Quote Link to comment Share on other sites More sharing options...
Alex Posted November 29, 2004 Share Posted November 29, 2004 Originally posted by ChrisB (blue is blitz off, pink is ch1 on controller, blue is ch 4 on the controller) ??? What about the Green? Quote Link to comment Share on other sites More sharing options...
ChrisB Posted November 29, 2004 Author Share Posted November 29, 2004 sorry my mistake i meant green was ch4 on the controller Quote Link to comment Share on other sites More sharing options...
Alex Posted November 29, 2004 Share Posted November 29, 2004 Then I would guess your gain was too high and was causing a boost spike which was making her run so lean that you're likely to blow the engine up very soon, I'd turn the BC off as it's not helping atm. It's either that or the sensor on the dyno wigged out on that run...though I'd rather not re-run that run to test the theory! Quote Link to comment Share on other sites More sharing options...
ChrisB Posted November 29, 2004 Author Share Posted November 29, 2004 Yeah ive left the controller off since that, and i think he did 2 runs and they were both that bad, could try with less gain though i think its set to 15, is that too high? Quote Link to comment Share on other sites More sharing options...
Alex Posted November 29, 2004 Share Posted November 29, 2004 A gain of 15 doesn't sound high to me Do you have a boost gauge and ever notice the boost spiking? Maybe it's to do with the fuel pump switching to 12v? or the fuel regulator? Quote Link to comment Share on other sites More sharing options...
ChrisB Posted November 29, 2004 Author Share Posted November 29, 2004 no boost guage i tend to just go off the boost on the Blitz, but never noticed any spiking on that either really. had thought about changing for an uprated fuel pump but on full boost the graph seems to show that its getting plenty of fueling so was thinking something electronice. Thor said possibly fuel cut defender, but when i said it was a trl one they said it wont be that ? Quote Link to comment Share on other sites More sharing options...
Alex Posted November 29, 2004 Share Posted November 29, 2004 The fuel pump is man enough...if it's working ok. As positive pressure from the turbo is fed in it's supposed to switch from 9v to 12v...I'm just wondering if it's not doing that quickly enough? Hopefully someone else will come up with an idea...by the way you can set a boost limit warning buzzer on the SBC-iD... Quote Link to comment Share on other sites More sharing options...
ChrisB Posted November 29, 2004 Author Share Posted November 29, 2004 yeah i will have to set one i always used to struggle to get it too boost over 1.2 bar but it seems much more willing to boost higher so will have to make use of that feature now. do you know if there is a way of checking when the the voltage is changing maybe wire a dash light on or something Quote Link to comment Share on other sites More sharing options...
Kopite Posted November 29, 2004 Share Posted November 29, 2004 hope you get it sorted out soon mate!! Quote Link to comment Share on other sites More sharing options...
ChrisB Posted November 29, 2004 Author Share Posted November 29, 2004 so do i mate thats a severe lack of petrol Quote Link to comment Share on other sites More sharing options...
SkyJawa Posted November 29, 2004 Share Posted November 29, 2004 I know its a different car but my Blitz SBC-ID 3 is set at a gain of around 10-11 for the GTR and I can still get boost spikes with it that low. Generally ok in normal driving but if I keep high revs and deck the throttle it can jump widely as the high rev/boost comes in. However, turning the gain down less than say 10 makes spool up much worse! Quote Link to comment Share on other sites More sharing options...
ChrisB Posted November 29, 2004 Author Share Posted November 29, 2004 i know some people have been advised to take all gain off on their supra to avoid boost spike but ive always felt it needs the gain to make the turbo spin up at a reasonable pace:confused: Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted November 29, 2004 Share Posted November 29, 2004 UK pumps are great, be surprised if it's that. Your injectors are plenty big enough It could still be a FCD Fuel Pump ECU? Which fuel pressure regulator have you got, Stock? Quote Link to comment Share on other sites More sharing options...
ChrisB Posted November 29, 2004 Author Share Posted November 29, 2004 yeah just a stock regulator, woould it be worth upgrading this just in case? i didnt know the fuel pump had an ecu to be honest is there a way of checking? Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted November 29, 2004 Share Posted November 29, 2004 Stock reg is fine for your purpose, just checking an FSE wasn't causing the problem. It would have been easy to switch the car to 12v and do a run & check at the time, but you are prob miles from Thor now. No easy way to check without trying things then checking the AFR. Check out MVP's cost on the AEM AFR gauge, may be worth it for you. Quote Link to comment Share on other sites More sharing options...
ChrisB Posted November 29, 2004 Author Share Posted November 29, 2004 was just thinking about that, otherwise its a trip to thor (200 miles) everytime i do something fse a bad thing? was thinking of getting one Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted November 29, 2004 Share Posted November 29, 2004 Leave your stock FPR on there mate TBH, have seen a fair few with problems ( FSE). Think Dusty is charging £245 inc or something for the AFR gauge, which is plain madness. Quote Link to comment Share on other sites More sharing options...
ChrisB Posted November 29, 2004 Author Share Posted November 29, 2004 Cheers for the advice will probably gert one ordered shortly, then try and sort the problem out once its all plumbed in Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted November 29, 2004 Share Posted November 29, 2004 Never a problem, hope you get it sorted painlessly. Quote Link to comment Share on other sites More sharing options...
LeeT Posted November 29, 2004 Share Posted November 29, 2004 Originally posted by Terry S Leave your stock FPR on there mate TBH, have seen a fair few with problems ( FSE). Think Dusty is charging £245 inc or something for the AFR gauge, which is plain madness. its £275:D Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted November 29, 2004 Share Posted November 29, 2004 Originally posted by leett its £275:D LOL sorry, think it is inc. delivery too tho:thumbs: Quote Link to comment Share on other sites More sharing options...
Paul Laing Posted November 30, 2004 Share Posted November 30, 2004 Hope it gets sorted soon Chris, when speaking to JJ, Michels brother he told me to set the controller up in ch 4, then set to 65 and 0 gain, the car is so quick at the moment, apparently the gains only there for smaller turbo cars that are running out of steam, you don’t need to set the gain on a Supra. If you have a gain of 15 on a 65 set your making 80….which is too much. That’s what I was told and it seems to work for mine, it holds boost much better too. Paul Quote Link to comment Share on other sites More sharing options...
CJ Posted November 30, 2004 Share Posted November 30, 2004 I wondered how long it would be Quote Link to comment Share on other sites More sharing options...
ChrisB Posted November 30, 2004 Author Share Posted November 30, 2004 ive tried that paul felt slow so dunno how long what would be cj:confused: Quote Link to comment Share on other sites More sharing options...
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