LE2 guys cam surge?
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Joined: Jul 2006
Posts: 153
From: central illinois
LE2 guys cam surge?
Do any of you guys running le2 heads and cam ever have a problem with cam surge at say light throttle, crusing at 1200rpm to 2000rpm? I just got this thing on the road and I cant really tell if it is a miss or just cam surge. And btw it pulls really hard and runs good at any real throttle.
Registered User
Joined: Feb 2004
Posts: 1,309
From: Oshkosh, Wisconsin
Do any of you guys running le2 heads and cam ever have a problem with cam surge at say light throttle, crusing at 1200rpm to 2000rpm? I just got this thing on the road and I cant really tell if it is a miss or just cam surge. And btw it pulls really hard and runs good at any real throttle.
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Joined: Aug 2005
Posts: 4,405
From: Kantuckee Yo'
Get a dyno tune, mail order tune wont cut it period.
It is running lean at those RPM's which causes most of the surge. The problem is if you run a closed loop tune, then its hard to get the PCM to add more gas within this range without affecting the rest of the RPM ranges. If you run a speed density tune then it can be tuned completely out. I encountered the same thing with my cam and I have two tunes to counter this problem.
It is running lean at those RPM's which causes most of the surge. The problem is if you run a closed loop tune, then its hard to get the PCM to add more gas within this range without affecting the rest of the RPM ranges. If you run a speed density tune then it can be tuned completely out. I encountered the same thing with my cam and I have two tunes to counter this problem.
Thread Starter
Registered User
Joined: Jul 2006
Posts: 153
From: central illinois
Get a dyno tune, mail order tune wont cut it period.
It is running lean at those RPM's which causes most of the surge. The problem is if you run a closed loop tune, then its hard to get the PCM to add more gas within this range without affecting the rest of the RPM ranges. If you run a speed density tune then it can be tuned completely out. I encountered the same thing with my cam and I have two tunes to counter this problem.
It is running lean at those RPM's which causes most of the surge. The problem is if you run a closed loop tune, then its hard to get the PCM to add more gas within this range without affecting the rest of the RPM ranges. If you run a speed density tune then it can be tuned completely out. I encountered the same thing with my cam and I have two tunes to counter this problem.
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