okay i have a 01 ls1 camaro engine in my car it is running rich but a while back me and a buddy ported and descreened the mass air i have changed the plugs too. what do yall think and also if the car is idling it is jerky and you can disconnect the mass air plug and it stays the same what do yall think thanks kenny

 

Ur probably running lean, get it dynoed and find out for sure. And I don't know what unplugging the maf is supposed to do....

 

unplugging the maf sends it into it's "warm up" or "limp home" mode.....can never remember if that is open or closed loop...

if it runs good with it unplugged typically taht means your maf is bad.

find someone else's maf and swap...see if it clears it up.

or try clearing the computer...unplug the battery for a half hour...and let it "relearn" the flow rates...

 

thanks never thought of trying someone elses

 

A ported MAF that hasn't been re-calibrated will likely cause all kinds of problems.For one,the metering element won't be able to communicate the difference in airflow.Consequently,the computer won't know there's more air entering the engine.The confusion between actual airflow & what the computer thinks is the airflow will likely cause drivabilty problems,& the computer will probably pull timing because it senses a lean condition.Less timing means less power.A MAF translator can help,but only with dyno-tested air/fuel measurements. It's usually cheaper & less trouble just to buy a correctly calibrated aftermarket MAF.Hope this helps

 

well put steelerfan if i buy an aftermarket one will i have to do anything to my computer and also it really only runs rich after it warms up and i stop at redlights. think this is the reason? hope so i am going to buy an aftermarket one if i dont have to do anything to the computer let me know please thanks kenny

 

It's probably the reason.No,the aftermarket is usually a plug & play,but it's always best to ask that when you go to make the purchase.Also an FYI,the stock MAF is good to about 500 horses so unless you have extensive mods it really isn't worth it.If you have a head/cam pkg in it or other hi-perfomance mods already then go for it & have some fun !

 

The aftermarket ones are fine if they are calibrated such as the SLP 85mm or Lingenfelter one.

They are a "finish up" mod in the sense that they don't add much to a stock engine but do add some to a modified engine (head & cam or better). Just like the smooth bellows or TB coolant bypass, you won't feel it but it will show up on the dyno. Best if it is installed in conjunction w/a dyno computer tune.

Steve

 

great i am about to do a heads and cam package i already have headers and a few other things not much so should i get the slp version it is like $100 and somthing. Will it already be calabrated? thanks for all the info guys

 

Its supposed to be plug and play with the best results w/a modified engine. Nevertheless, you'll do very well if its in place at the time of the tuning process vs install afterwards. Such an approach will maximize its benefit. IAE, you'll need to have the computer tuned to match the new Heads and cam. Get it all done at once.

The little things all add up, especially when in place at the time of tuning major mods (H & C). That's how I approached it and it resulted in 421 RWHP about two years ago. I know its not the "best" by today's standards given the perfection of porting LS6 heads (not available when I did mine). But at the time it was a good deal. I still get a kick when I take it to the race track.

Steve

 

hey steve what all do you have done thanks

 

Hi Kenny,

As far as the engine and things making power its:

SLP 85mm MAF, Smooth Bellows, CAI, 160* stat, SLP Billet Flywheel, SLP Headers, SLP heads & cam package (cam pn: 51013), LM, Dyno Tuning, and race pipes. The dyno tuning was done by Brian Reese at SLP. VG job. I just wish the LS6 ported heads were as available then as they are today. Back then they were VERY expensive if you didn't have an LS6 head core.

I use the car for an open track car. It holds its own w/Heads & Cam ZO6s and 911s. Supercharged ZO6s and turbo 911 are another story!

The 4:11 Moser Rear End is only OK for the track as I have to frequently shift to 5th to avoid the redline. Too many shifts. The acceleration from the pit area is a blast. Nevertheless, I probably should've stuck w/the 3.42, even if it were in a Moser.

Steve

 

damn nice setup