Re: Not for Nuthin' But Close!
 

Maybe , but these EFI combos have a definite torque curve , that seems to fall off rapidly.
With stock cams, I wouldn't up the shift points, without trying it manually first.

Re: Not for Nuthin' But Close!
 

We race a 2.2 eco in IMCA dirt track and have done a lot of wheel dyno work. We have picked up a lot of Hp on the curve with a change in the stock ecu tune. We have to run a stock exhaust manifold, but a header and pipe should make more power. Face book Garret at TBG tuned for your tune up he does a lot of eco stuff. PM me and I can tell you some stuff on these motors cheap. They can turn 8000 on the stock bottom end with the rev limit turn up. The intake is the cork like many other engines. If you pull the intake off clean it out good with carb cleaner along with the intake port and valves will help with air flow. A fresh air system is also worth some power if done rite. The stock injectors are fine. Don't forget to change the fuel filter and copper core spark plugs with the gap run a little tighter will also help. Go to a junk yard and get stock cams from a Malibu or Classic same lift but different grind for more toque. I got some for 20 dollars for the pair. Get rid of the balance shafts and it will spin up quicker. There is a simple kit for this that can be done rite in the car. We have made around 160 at the wheel with this combo and with a header it would be more. We run a stick and used a Saturn Vue final drive, it has more ratio 3.94 to a 4.41. Have not done a lot of auto stuff but I sure a master as yourself can find out more. I would like to do a car like this but can't get done what I have already. Tom

Re: Not for Nuthin' But Close!
 

This type of thread is why I joined Class Racer. The knowledge base of this forum is unmatched.


Billy, why and how are you clearing the ECU?



Thanks


Rick Thomason
GTOMayhem

Re: Not for Nuthin' But Close!
 

Rick, I should have written "clearing the ECU's memory". Whether or not it works, I've been told by a handful of guys who bracket race these things to "run it hot and don't let the ECU learn" and it will be consistent. So far, I don't have any reason to dis-believe this advice. I just put a battery quick dis-connect in the ground cable.

Re: Not for Nuthin' But Close!
 

And by 'these things', do you mean Ecotech in particular or cars using stock ECUs in general? Would this be something to do to a 2004 LS1 GTO if I was bracket racing it?



Thanks


Rick Thomason
GTOMayhem

Re: Not for Nuthin' But Close!
 

Cars using stock ECUs in general. It won't cost anything to try it.

Re: Not for Nuthin' But Close!
 

Just a quick update, I'm hoping to have a package from HP Tuners by Friday. I'm planning on going to Island on Sunday. I also finally checked out the spark plugs. They are the original plugs with just under 120K miles on them. I have replacements coming.

Re: Not for Nuthin' But Close!
 

Breaking the budget with them new spark plugs.........lol

Re: Not for Nuthin' But Close!
 

Billy I hope you “splurged” for NGKs!

Re: Not for Nuthin' But Close!
 

The timing chain wear out in these motors bad backing up the cams. Loosening the cam bolts and pulling the cams around and then retightening will help also. Get rid of the stock air box will pickup over three HP. Tom