you guys with cams
Thread Starter
Le Mans Master
Joined: Dec 2003
Posts: 7,457
Likes: 144
From: NC
you guys with cams
Any of you that have put a better cam in, I am wondering what effect it has on check engine light coming on. The way our emmissions are here in NC is that they put on an OBDII scanner of some kind on the car. From what I understand, so long as their are no codes, and everything visually looks ok, you pass. Any codes stored, you fail.
For tuning, best I can tell, this car will do a pretty good job of tuning itself. With both a MAF sensor and a MAP sensor, the car seems like it would accomodate the cam with no problem without tuning if you chose to go that route. Am I wrong in this thinking? Not saying a tune is not a good idea, but you could in fact not do it and still be fine so long as the cam isn't so radical that you have to deal with irratic air intake at idle. Right?
Also, are you having to pull the radiator and such to do the cam install? Any pitfalls to watch out for?
Thanks
For tuning, best I can tell, this car will do a pretty good job of tuning itself. With both a MAF sensor and a MAP sensor, the car seems like it would accomodate the cam with no problem without tuning if you chose to go that route. Am I wrong in this thinking? Not saying a tune is not a good idea, but you could in fact not do it and still be fine so long as the cam isn't so radical that you have to deal with irratic air intake at idle. Right?
Also, are you having to pull the radiator and such to do the cam install? Any pitfalls to watch out for?
Thanks
Burning Brakes
Joined: Nov 2001
Posts: 1,149
Likes: 42
From: Minnesota
I am not an expert, but, I did stay at a holiday inn express last night. 
anyway, I would think that if the cam was throwing trouble codes, as long as it didnt affect drivability, tuning could eliminate the codes being thrown in the first place.
anyway, I would think that if the cam was throwing trouble codes, as long as it didnt affect drivability, tuning could eliminate the codes being thrown in the first place.
Drifting
Joined: Nov 2002
Posts: 1,651
Likes: 125
From: laguna niguel ca
you might just need a tune here's why
depending on the size of the cam, the lope can be read as a misfire, thus setting a code. If your car is tuned, the tunner will soften the misfire code setting and increase the window of acceptability so as to not set a code. Most all tunners do this enabling you to use any size cam you want. It is true that the ECU has the ability to relearn fuel tables, only within it's stock window parameters. A tuned car has a much larger parameter to learn in. I have changed cam twice,and my program was put in before any cam change was made. You guessed it no reprograming was necessary, Only an idle increase was done on the first install not the second. My second cam specs are 224/228 581/588 on 114LSA's. Great power nice idle and no retuning.
andreas g.
andreas g.
Melting Slicks
Joined: Nov 2004
Posts: 2,176
Likes: 0
From: Orange, CT
cerino2000,
I have a cam in my C6 that is slightly larger than andreas g.'s, and it is untuned.... My car will stall 50% of the time, but only when I come to a stop, not when it is idleing... I am planning on getting tuned ASAP, and reccomend doing so with any cam, no matter the size. There are other advantages to tuning for the cam, the two most important being better drivability, and more power. The larger cam will cause the car to run more rich (crappier gas milage, inefficient power, stumble at idle and between shifts). Tuning will lean out the A/F ratio, creating more power. Drivability would be a biproduct of this.
PM member connecticut. He did my install, and might be able to help you further...
I have a cam in my C6 that is slightly larger than andreas g.'s, and it is untuned.... My car will stall 50% of the time, but only when I come to a stop, not when it is idleing... I am planning on getting tuned ASAP, and reccomend doing so with any cam, no matter the size. There are other advantages to tuning for the cam, the two most important being better drivability, and more power. The larger cam will cause the car to run more rich (crappier gas milage, inefficient power, stumble at idle and between shifts). Tuning will lean out the A/F ratio, creating more power. Drivability would be a biproduct of this.
PM member connecticut. He did my install, and might be able to help you further...
Safety Car
Joined: Oct 2001
Posts: 4,945
Likes: 0
From: Dallas/Valley Ranch TEXAS!!!
I have a small blower cam in mine. The car IS tuned, with no codes what so ever...The car feels GREAT!!!
lpe intake
dynatech headers
Borla stingers
blower cam
4.10's
tuned
soon to come f.a.s.t. intake and super charger...
Jeremy
lpe intake
dynatech headers
Borla stingers
blower cam
4.10's
tuned
soon to come f.a.s.t. intake and super charger...
Jeremy
