I recently put in a TSP 231/237 cam with 918's. I got through 3 heat cycles and decided to rev it up Sunday after it got to normal temps. I revved it up and when it came back down to idle, it sounded like it was going to stall for about 4 seconds. Then the idle went back up to normal. I am thinking a tune is needed. I've been told the car was tuned for the TR220 cam that was in it, but I am not 100% sure.


I also smell gas when it is idling. I assume it needs leaned out a little.

Is this common after cam installs?

 

yeah,you need a tune.

 

I believe every cammed car will try to stall out after a hard rev.....I am not 100% sure about this...someone tell me if I am wrong.

 

yep .before tuning my car would just about cut off after reving.tuning made a world of differance.

 

Thanks. I figured that's what I needed. It's just nice to hear that it's not abnormal.

 

If you did not drill the TB the IAC counts will be to high and won't be able to compensate. When I did my 224 the counts were at about 60 and the car would do what you said . I enlarged the hole til the IAC postion was about 40 and it ran fine.

 

I've got the same cam. It does the same thing after a rev. Don't worry man, you're not alone.

 

did you ahve it tuned or is it the stock tune?

 

No, it's not tuned yet...still on stock tune.

 

tuning works wonders after a cam swap
on my third cam never drilled TB either idles dead on , cold start, warm, after rev ect.

 

mine does the same thing man...i have a custom built COMP CAM .581 lift though. and NO HEAD WORK!!!

 

I Drilled My Throttle Body Per Mti After I Installed The G-1 Cam
After I Got My Car Tuned The Idle Started To Hang At 2,000 Rpm On Decel
I Replaced My Throttle Body & Now It Drops Back Down Fine-drilling Is
A Non-tuned Cars Way To An Easy Idle-i Wish I Hadn't Drilled Mine.dude,you
Must Get Your Car Tuned After A Cam Install-you Will Be Amazed At The
Difference.