Tuner wants to drill a hole in my TB
09-25-2010, 12:26 AM
#61
Thanks Scott, I figured it was something like that. These new o2s are working alot better than the old stockers.
Today we took another shot at tuning the car without drilling. Opened the tb blade as far as it would go and still read zero on the tps. It caused a lot of idle hanging but alot less idle searching. So the tuner made some more adjustments to the follower and cracker tables and backed off the tb blade a bit. Now it's alot better than before. Sometimes it will hang at 1500rpms but I gotta get out and drive some more tomorrow to really get an idea of its manners.
The car does idle search still if I drive a specific way. That is when down shifting to high rpms (ex 3500rpms) and then clutching to idle. The car is loading up on the fuel while on decel then when I clutch it's got all that extra fuel to deal with and it stumbles then searches. Tuner mentioned that he couldn't do anything about that because of my cam profile. Guess I just gotta go easy on my car lol.
Funny thing is the car drives friggin great while the AC is on!
Today we took another shot at tuning the car without drilling. Opened the tb blade as far as it would go and still read zero on the tps. It caused a lot of idle hanging but alot less idle searching. So the tuner made some more adjustments to the follower and cracker tables and backed off the tb blade a bit. Now it's alot better than before. Sometimes it will hang at 1500rpms but I gotta get out and drive some more tomorrow to really get an idea of its manners.
The car does idle search still if I drive a specific way. That is when down shifting to high rpms (ex 3500rpms) and then clutching to idle. The car is loading up on the fuel while on decel then when I clutch it's got all that extra fuel to deal with and it stumbles then searches. Tuner mentioned that he couldn't do anything about that because of my cam profile. Guess I just gotta go easy on my car lol.
Funny thing is the car drives friggin great while the AC is on!
09-26-2010, 05:26 PM
#63
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I have done this with roller cammed engines drilled holes in the butterflies so the engine can get more air with out any thing trying to meter it if you open the throttle the ecm will read the TPS and fatten/richen the system ....The bigger the cam the less vacum
09-30-2010, 08:22 PM
#64
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I understand the part about not getting enough air. But aren't the parameters that you can set to change that in the tune? Also couldn't we get the same results by setting that screw on the tb that changes the rest angle of the blade?
So four new tuner recomendations and one other. lol
Hopefully frost or some of the other knowledgeable tuner guys puts in their two cents.
So four new tuner recomendations and one other. lol
Hopefully frost or some of the other knowledgeable tuner guys puts in their two cents.
). 