I ws just wondering if you guys might think I would need some tuning on this setup.

Jet Hot Longtubes (No cat)
1.6 RR
GTP stage 1 heads

here are the flow #s for the heads

Lift Intake Exhaust

0.100 62.5 53.2
0.200 125.6 102.4
0.300 182.9 140.3
0.400 220.4 164.6
0.500 233.2 177.8
0.550 228.1 181.2
0.600 224.4 182.7

My car at idle the BLMS will go all the way to 108 and had a stumbling problem. This was about 1.5 to 2 weeks after I put the above mods on the car.

I put some known good O2s in and did the same thing. Well the left side stayed at 110., But maybe the pcm didnt have enough time to relearn with the new O2s. Plus the stumbling seemed to have gone away. But now after about the same amount of time (1.5 - 2 weeks) the stumbling has come back

I am guessing my O2s are fouled out as it is running rich and the pcm is trying to pull fuel out as evidence by the low BLMs. I dont have a scanner, so never got a chance to scan after I had went through a few drive cycles with thew known good O2s in.

Do you guys think with the mods I put on recently that it help if I did some tuning on it? Maybe with the headers rr and the way the heads flow, it is pulling more fuel through and messing up the 02s??

Thanks

Jason

 

Same thing happened to me when I did my heads.

I recalibrated my MAF and now I am back to 128 across the board.

Send me an e-mail at ben@hennesymech.com and I will send you the excel spreadsheet I developed to do this.

Ben

 

Hey, I've never seen this spreadsheet! Send it to me too.