Cammed LT1 running Lein?
03-22-2009, 12:25 PM
#3
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Well I don't know about the IAT at 115 making it run lean, but if it is in fact leaner than it should be, yes you would have a mis at high rpm/WOT as the fuel runs out. I had a pump that was too small for the application cause it to run like crap at WOT and mis up high due to the lean running condition.
What about putting the resistor in line of the coolant temp sensor to richen up the fuel some to see fit hat helps...unless you have data logging to watch what is happening. You can get resistors for cheap at Radio Shack.
What about putting the resistor in line of the coolant temp sensor to richen up the fuel some to see fit hat helps...unless you have data logging to watch what is happening. You can get resistors for cheap at Radio Shack.
03-22-2009, 01:07 PM
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What do you know,, another PCMFORLESS tune running lean. Don't mean to start up any ruckious here but it's probably due to your tune. I have seen many guys complain about their tunes after getting them back from Bryan after he tunes it. Your best bet is to find a local tuner and get it hooked up and looked at. DON'T rely on a mail tune.
03-22-2009, 09:31 PM
#5
What do you know,, another PCMFORLESS tune running lean. Don't mean to start up any ruckious here but it's probably due to your tune. I have seen many guys complain about their tunes after getting them back from Bryan after he tunes it. Your best bet is to find a local tuner and get it hooked up and looked at. DON'T rely on a mail tune.
03-22-2009, 09:43 PM
#6
Some more symptoms... Ok... Drving around A LOT today, and was watching my car closely..
Seems like when I drive my car and it warms up, ill shut it off, then after it sits for 5mins or 15mins, Ill start it up and go WOT(just like at track) it will feel like its misfiring. And its pretty violent when it sputters.
Ill jump on the HWY and drive for awhile and seems like it cools off a bit and runs Perfect..
IDK what to check.. new coil, ICM, plugs, wires, Opti has about 14-15k miles..
Seems like when I drive my car and it warms up, ill shut it off, then after it sits for 5mins or 15mins, Ill start it up and go WOT(just like at track) it will feel like its misfiring. And its pretty violent when it sputters.
Ill jump on the HWY and drive for awhile and seems like it cools off a bit and runs Perfect..
IDK what to check.. new coil, ICM, plugs, wires, Opti has about 14-15k miles..
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03-23-2009, 01:18 AM
#9
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Almost sounds like the opti is going bad. What are you shiftin at now? After I had the old red car tuned and raised the shift points, it was like a month later opti went bad. Started out slow like that at first, and I changed my plugs/wires and fuel filter and it just kept getting worse. It was violent like you described, then I tried an opti from U-pull it and it drove perfect.
