Low HP - TO4E
12-06-2005, 01:54 AM
#61
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Thanks, I will try and revisit by Weekend. I can lean out the high RPM, but I am not too sure whether it is a chip problem, or tuning device problem with being lean in the lower rpm. Will have to find my way back to the dyno, or validate the purchase of a wide band A/F meter; would prefer a round one that can replace my current narrow band A/F guage, .
biggles
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12-06-2005, 05:13 PM
#63
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Yeah that is a good idea... Danno didn't map them THAT lean though. Mine stays around 14.7 until I get a bit of boost, then drops steadily until 12.5... Granted, I had a big part in my car's tuning, but Danno's chips were pretty close, had I used one of the correct injector sizes to begin with.
12-07-2005, 02:06 PM
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Do you think that bigger injectors or an adjustable FPR would do anything for me? I am trying another chip, but if all else fails and the chip is the issue, I guess I too will have to turn to Vitesse, but would at least like to know about any advantages to installing an adjustable FPR.
biggles
biggles
12-07-2005, 03:40 PM
#65
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No, bigger injectors are not an issue until you are running very lean. You are too rich.
So, either you are not making/holding 18psi to redline (which is the most probable)
Or you just need some better tuning.
I say the boost is probabaly the issue as you are mapped for 18psi WITHOUT the MAF. If you were running 18 you would be pretty close, but with the MAF and 18psi you would be more to the lean side then on the rich.
I am willing to bet you are not getting or holding 18 to redline.
So, either you are not making/holding 18psi to redline (which is the most probable)
Or you just need some better tuning.
I say the boost is probabaly the issue as you are mapped for 18psi WITHOUT the MAF. If you were running 18 you would be pretty close, but with the MAF and 18psi you would be more to the lean side then on the rich.
I am willing to bet you are not getting or holding 18 to redline.
12-07-2005, 04:47 PM
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I can back out fuel in the higher RPMS and will do prior to another dyno. However, I am also sure we had verified the boost. Could it be that the lindsey blow off valve is not working properly. I have seen comments that these billet ones leaking. Actually, I bought this from NZ Andrew and he talked about possible leaks.
12-07-2005, 05:07 PM
#67
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The guru chips are mapped rich in the top end and a little lean at peak torque. If you have a piggy back you can take some fuel out. in the load cells that are rich and add fuel to areas that are lean. A fpr will add fuel/take away fuel through the whole rpm scale. Both can be used in conjunction to dial in a good fuel curve.
