With all the discussion of tunes and such I was thinking today, trouble i know, what kind of power can the stock ECU support without a tune.

I know one of the limiting factors is the injector sizes.

Stock 340cc ~= 200Whp at +100% duty cycle

JCW 380 = an additonal 10 - 20hp, just a guess

So if the stock ECU can scale to the JCW injectors and the JCW tune scale to a larger 420cc injector?

What is realistically safely possible on the stock tunes?

Is it possible to get a GP tune on an older ECU giving the raised redline?

What can the stock head support?


-Jonathan

 

My stock 340s made 224 hp.
I dont know what your talking about outside of that...
No its not possible to get a GP tune on the old Ecu, as its a completely diffrent ecu.
your best off getting a custom Tune like i have.
Your stock head probably should not be pushed past 7300

 

If your stock injectors are running +100% duty cycle, its time for new injectors. I can get you an awesome deal on 550cc injectors but they will require a tune to scale 'em down. PM me for details.