how much hp HELP

[chris61210]

I am the owner of a 98 manual GT with 60,000 miles how much hp do you think i have with these mods?


SLP loudmouth exhaust
BBK 70mm throttle body
BBK Xpipe no cats
BBK cold air intake
trick flow upper intake plenum
ford racing fuel injectors

-also I think the slp with the O/R xpipe sounds to raspy, not to good. would I be able to change out the SLP resonators with flow master super 40 delta flow mufflers 2.5inches inlet and outlet , would they fit??

 

[Mach1Run]

As far as the HP goes, just wait for one of the local shops to have a dyno day and get one then. I think I only paid $30 for one with A/F ratio last time I went.

 

[stangGT97]

You're probably around 199-207rwhp, with your power peaking somewhere around 4000 given that you still have NPI intake, cams and heads. Stock, your 98GT should dyno around 190rwhp, given the 225 flywheel hp rating and 15% drivetrain loss. The mods you have probably added 10-15 hp or so.

Do you currently have the Loudmouth 1 resonators? I agree with you about them sounding too raspy with the O/R midpipe. You have to keep in mind, however, that flowmaster mufflers have an offset inlet and outlet, so you would have to modify your exhaust piping to get them to fit in properly and still keep the tailpipes aligned. I would suggest you try the SLP Powerflo mufflers or even the Loudmouth II resonators. Both will sound much better with your O/R X, and you can swap them in with ease bc your catback is modular (any SLP resonator can be used with it).