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237/246 113+3 625/605 Lift
Forged pistons 11:5 static compression
Long tube headers 3? exhaust no cats.

Raised the PE enable you 90kpa. Still idles way rich of commanded in OLSD. And on the maf tune it idles at commander 14.6 but when it goes into closed loop the fuel trims still go 24 percent rich....

Yeah I?m putting it into PE right off idle to fight some cam reversion in the low rpm ranges while cruising in 5th and 6th. This is temporary until I get a tune built to isolate the trouble spots...

Also, on my MAF tune, in open loop it runs and idles at commanded afr. Soon as it goes into closed loop, the LTFT maxes out at like 24.2 percent and it goes really rich into the low 12s. Reset the...

SD Tune and Log file attached... This is with 20 percent pulled from the VVE from 1600rpm down. Still 10 percent rich of commanded.

I also put all 0 in the maf frequency table to rule that out as well.

I did. Even the DOD ones just to make sure that wasn?t the issue. I will post a log file tonight.

I still cannot get this thing to respond to any changes I make in SD. I have put all zeroes in the injector temp table and bring car up to operating temp, so that rules out Rich after reflash I would...

Or possibly the Injector Temp Offset table needs to be zeroed out?

08 Vette with E38. Running an open loop maf only tune. Got the afr dialed in during warm weather. Now it?s 20 degrees cooler outside and the car is running lean 3-5 percent everywhere. Do I need to...

Well, I tried everything mentioned above..... car still runs pig rich at idle. Getting some bad camshaft reverberation as well, even on the clean MAF tune. About 1500-2000k cruising in 5th, I can...

Thanks guys, I?ll give that a try when I get off of this hurricane storm work!

Fuel-Open Loop/Base-Open Loop Gains..... I have all of these tables set to 1.00 so they don't mess with my commanded AFR. The multiplier range is form 0-2..... Should I have 0 in all the tables? I...

2008 C6 Vette with E38....
I have the MAF tuned pretty good and now I am working on the speed density tuning. MAF disabled, Dynamic High RPM disable set to 8,000 rpm, Fuel Trims turned off, P0103...

With the stoich set at 14.1 and the maf tuned in open loop to +1%, as soon as I turn the fuel trims back on and car goes into closed loop, it goes to 11s and 12s afr at idle. Do I have bad o2s or is...

I changed the Stoich to 14.1 and it went away. I am in open loop doing maf tuning. Turned the ltft?s back on and now when it goes into closed loop the fuel trims are going crazy rich. Is that due to...

Cammed LS3 with 11:5 static compression, long tube headers and 3 inch dual Catless exhaust, pump gas. Car does not like 14.68 afr in the lower rpms at cruising speeds. Getting a lot of lean misfire...

PROBLEM FIXED! The extension wires were swapped around. I forgot that the extension harness plug that I have can be plugged in upside down to swap the A and C wires without repinning. I had it...

Meaning the car was cranking first try. I have the harness wires swapped already. It was running, cranking fine. I'll keep trying things. Thanks for the help.

Sensor is in the front. I'm using a harness extension. All of which were working fine until the intake swap. Now I am getting a P0342 code for low curcuit. I will check the wiring again and check...

New cam sensor.... still not cranking any better.

I agree with you 100% about the timing. And what I have is a band aid fix. Would a stock timing curve be better and just refine the WOT timing? I don't have access to a dyno to tune the timing for...

Back to the cranking issue... What's up with it? I guess the crank sensor is looking like the culprit.

I've put as much as 28 degrees to it at the track with no improvement in et. I know its far from ideal timing for cruising, but like I said it has great street manners as well. Here is another crazy...

I am putting the car into PE right off of idle. If I let the AFR get anywhere above 13.2 under load I start getting a bad lean pop and misfire. Plugs look great. The VE spike at 100 map from 1200 to...