Hey there, new to the forums, name is Leo.

I have a 2005 Mustang GT with the following mods:

WMS RAM Air Intake
Underdrive Pulley's
4.10 Gears
Stage 2 Comp Cams
Gutted Cats-Straight Pipes
Predator Tune for 93 Octane
Throttle Body Spacer
Strut Tower
Aggressive Chin Spoiler
Hurst Short Shifter

Obviously enough, some of the mods are irrelevant to the question but, how much power would yall say I have gained? Where am I at in the RWHP and what should my quarter time be at what mph?

Even though I have a Predator tuner...should I get it Dyno'd? Would it make that much of a difference? Or not enough for the money?

What would yall recommend my next step being on increasing my HP?

Should I get water temp/oil temp gauges? I run mainly streets, but plan on going to the track soon and making a habit of it.

Thanks for your responses guys!!

 

If you're going to the track, invest in some sticky tires and a spare set of wheels. You WILL need them! I recommend ET Streets.

 

I would say 315-330 hp, 12.7-13.1 for 1/4 mile with MT ET Streets. Otherwise 13.5 sec.

 

Long tube headers should show a high-end HP boost. The charge motion delete plates should help as well. Other than switching to a higher compression piston, not sure much else would help with the naturally aspirated HP, other than maybe race gas and a tune for that.

 

you recommend the long th's rather than the shorty's?

 

Oh yeah, shorties do little for the HP, same basic resonant length as the stock iron manifold. The longer tubes before the collectors and the deletion (if you're okay with that) of the catalytic converter are what make the power gains. Some gain from size of the tubing, but mostly for blown or higher displacement engines.

Last 5.0MM&FF article I read praised the Mac long tubes for their power increase, which are also some of the cheaper ones, and I think a bit easier to install as they're not so long. Can put a prochamber or other crossover pipe on as well, should sound great.

http://www.mustang50magazine.com/tec...ers/index.html