Do I need a tune

[slow86fiveoh]

My car seems really picky now since the heads and intake swap before this it ran fine but now its around 10:1 compression with the mods in my sig now it is running pig rich the tps is set at .98 at idle but it seems to run pretty rough no matter where u set the timing

[Kevin1989]

whats your fuel pressure at?

[slow86fiveoh]

38 lbs I believe, I just re adjusted the tps and reset the idle along with a slight retard of the timing and it seems alot better than it was everything is new tps, o2's, maf, throttle body, inj, fpr. As of now it seems ok only time will tell, I want to strap it to the rollers soon anyway.

[Kevin1989]

I would think that 38-40 would be fine. That's what he set mine when he tuned it.

[slow86fiveoh]

This is my first fuel injection build all my other motors have been carbed So this is new to me

[Adam@S&MMotorsports]

This car will run MUCH better with a good tune...

[slow86fiveoh]

Can u shoot me a rough idea what a tune will set me back

[slow86fiveoh]

Thanks everyone for your help I called mike at Dayton performance and he gave me some insight on what the problem might be and with a little time I think I have it figured out

[slow86fiveoh]

Ok I have a update on the issue I reset the tps and idle checked all the sensors and cleaned all the electrical connections and put dielectric grease on them and set the timing at 14 deg with the spout out, it runs much better but the combo doesn't like to cruise under 2000 rpm. The question is can that be tuned out of it or does it need more gear to get it out of that rpm range, it now has 3.55