???Tuning/396???
Thread Starter
Drifting
Joined: Nov 2000
Posts: 1,276
Likes: 0
From: Ft. Worth Texas
St. Jude Donor '11
???Tuning/396???
Well, finally got the motor running. Took it to get gas and back home. Never over about 3500 RPM. No codes being thrown. Big question is....is the tune on my car good enough to break it in on, or should I leave it parked till I retune. The previous tune was for hotcam/heads/headers on the stock LT4. Just a little paronoid about it.
Any help would be great.
thanks,
jeff
Any help would be great.
thanks,
jeff
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by GS345
Well, finally got the motor running. Took it to get gas and back home. Never over about 3500 RPM. No codes being thrown. Big question is....is the tune on my car good enough to break it in on, or should I leave it parked till I retune. The previous tune was for hotcam/heads/headers on the stock LT4. Just a little paronoid about it.
Any help would be great.
thanks,
jeff
Any help would be great.
thanks,
jeff
Jeff it sorta depends on your mods. But it sounds like its running pretty good now and if you are not experiencing any problems such as drivability and the PCM throwing out any DTCs. Then I would just drive it and break it in. The MAF control strategy in these cars are pretty forgiving, as long as the cam isn't too lumpy and if it drives good then go for it.
Thread Starter
Drifting
Joined: Nov 2000
Posts: 1,276
Likes: 0
From: Ft. Worth Texas
St. Jude Donor '11
Originally Posted by tjwong
Jeff it sorta depends on your mods. But it sounds like its running pretty good now and if you are not experiencing any problems such as drivability and the PCM throwing out any DTCs. Then I would just drive it and break it in. The MAF control strategy in these cars are pretty forgiving, as long as the cam isn't too lumpy and if it drives good then go for it.
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
Hook up a scanner and take a look at your fuel trims. if they're at +25%, they're at the limit of the PCMs control and you risk being too lean. If the fuel trims are fine and you're not seeing any excessive knock retard, break-in driving should be fine.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by 96GS#007
Hook up a scanner and take a look at your fuel trims. if they're at +25%, they're at the limit of the PCMs control and you risk being too lean. If the fuel trims are fine and you're not seeing any excessive knock retard, break-in driving should be fine.
Hey Jim how are things
My guess with his cam, he is going to be on the rich side, especially with the amount of overlap that cam has there is going to be some reversion in the intake tract. The MAF will see that as additional flow and will fuel for it. This will happen especially in the idle RPM regions and just off idle as well. It should be relatively good in the midrange and upper RPMs. And as rich as I have seen some of the cars in PE, he should be good to go in that area as well.
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Originally Posted by tjwong
Jeff it sorta depends on your mods. But it sounds like its running pretty good now and if you are not experiencing any problems such as drivability and the PCM throwing out any DTCs. Then I would just drive it and break it in. The MAF control strategy in these cars are pretty forgiving, as long as the cam isn't too lumpy and if it drives good then go for it.
You'll need to have the idle speed raised during the tuning process because of the cam you're running. 800/850 should do it.
Jake
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