This problem started yesterday after installing a Cardone remanufactured LS1 MAF. I've heard that these are often bad out of the box but I don't want to jump to conclusions until I hear from you guys.
I had high BLMs that were being caused by my ported descreened LS1 MAF. My BLMs were pegged at 160 and my Scanmaster was showing AF 02 - 03 at idle. While the BLMs were way too high the car ran great other than the occational off idle stumble. This week I installed Razor's alcohol injection kit and tuned it to run boost to 27 psi through my TE-60 With no knock. The car felt strong! Trying to get a handle on my BLM issue, I installed the remanufactured LS1 MAF. After running for about a year with BLMs constantly at 160, it felt like a miracle to watch it slowly drop to 128. However the My scanmaster still shows AF 03 at idle... Shouldn't it read 05 - 07? or is the LS1 MAF supposed run lower than the stock MAF? Anyway the car seems to be a lot better driving under normal conditions. No stumble off idle, slightly smoother acceleration, idles softer at a slightly lower RPM. After driving it around a little, gave it some boost just enough for it to activate the alcohol about 12psi then backed out of it. I tried again easing it to full trottle when it gets to around 24 psi at about 4800 - 5000 RPMs the needle on my boost guage flutters extremely fast from 22-26 PSI and the car feels like it stops making power. I since the only thing I changed was the MAF, I suspect that is the problem but can a MAF sensor really cause that much disruption at WOT when it behaves so well driving under normal conditions? Or is it a problem with the tune being out of whack since the BLMs have suddenly dropped 32. I'm going to try my old MAF this afternoon and see what happens. Any help is always appreciated.
I had high BLMs that were being caused by my ported descreened LS1 MAF. My BLMs were pegged at 160 and my Scanmaster was showing AF 02 - 03 at idle. While the BLMs were way too high the car ran great other than the occational off idle stumble. This week I installed Razor's alcohol injection kit and tuned it to run boost to 27 psi through my TE-60 With no knock. The car felt strong! Trying to get a handle on my BLM issue, I installed the remanufactured LS1 MAF. After running for about a year with BLMs constantly at 160, it felt like a miracle to watch it slowly drop to 128. However the My scanmaster still shows AF 03 at idle... Shouldn't it read 05 - 07? or is the LS1 MAF supposed run lower than the stock MAF? Anyway the car seems to be a lot better driving under normal conditions. No stumble off idle, slightly smoother acceleration, idles softer at a slightly lower RPM. After driving it around a little, gave it some boost just enough for it to activate the alcohol about 12psi then backed out of it. I tried again easing it to full trottle when it gets to around 24 psi at about 4800 - 5000 RPMs the needle on my boost guage flutters extremely fast from 22-26 PSI and the car feels like it stops making power. I since the only thing I changed was the MAF, I suspect that is the problem but can a MAF sensor really cause that much disruption at WOT when it behaves so well driving under normal conditions? Or is it a problem with the tune being out of whack since the BLMs have suddenly dropped 32. I'm going to try my old MAF this afternoon and see what happens. Any help is always appreciated.