4.6 2v power a little low??

RichV · Jul 31, 2016

PI 4.6, LT headers with off road h, dumped mufflers, steeda timing adjuster, stock ECU.

It makes 237hp and 277tq. Does that sound right? Not sure on the timing setup.

So so you guys know the rules, this is a local CMC Mustang. ECU tuning is not allowed. Does the HP/Tq sound right? Limits are 260/310. Seems like others are making the limits where this guy is about 20hp off.

Royal96 · Jul 31, 2016

If it's a PI engine on a NPI tune, I could see 230 hp to the rear wheels being right.

Frank.JD.Perez · Jul 31, 2016

totally seems off but i also agree with royal

RichV · Aug 1, 2016

He said it's a 01 GT ECU.

Frank.JD.Perez · Aug 1, 2016

then something seems way off...

Royal96 · Aug 1, 2016

So is it a full PI motor (with the lower compression bottom end) or a pi swap (pi heads on npi shortblock)? Because an 01 GT only made 260 HP to the flywheel. Factor in your typical 15% drivetrain loss and you're looking at 221 rwhp. Exhaust and timing can only get you so far. Still sounds normal to me.

RichV · Aug 1, 2016

Royal96 said:
So is it a full PI motor (with the lower compression bottom end) or a pi swap (pi heads on npi shortblock)? Because an 01 GT only made 260 HP to the flywheel. Factor in your typical 15% drivetrain loss and you're looking at 221 rwhp. Exhaust and timing can only get you so far. Still sounds normal to me.

PI motor top and bottom. 5 speed.

wmfateam · Aug 1, 2016

Make sure it doesn't have a Doormann (sp) intake.

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97stanger · Aug 1, 2016

To be honest I don't think it sounds off at all. Factory PI motor came with 265 crank hp, when factoring in about 15% drive train loss that is about 225rwhp. To say he picked up 12rwhp from long tubes and a mid pipe on a stock PI motor if anything is generous.

white95 · Aug 1, 2016

Echo

Echo

Looks good to me

Echo

lwarrior1016 · Aug 1, 2016

Mustang's suck. These things are super weak

Royal96 · Aug 1, 2016

RichV said:
PI motor top and bottom. 5 speed.

Perfectly normal then. These things aren't particularly n/a kings or anything.

the5.ohh · Aug 1, 2016

Yeah thats about right. 260 crank hp stock, so you're in the ball park.

Nighttrain · Aug 2, 2016

Now if he had a npi bottom end? Different story.

Frank.JD.Perez · Aug 2, 2016

Nighttrain said:
Now if he had a npi bottom end? Different story.

pi heads, cams and intake? 9.5:1 comp ratio with npi bottom end right?

Nighttrain · Aug 2, 2016

I think its 10.5 to 1 gotta back track...blak would know fo sho. Now you deck the heads and do some valve reliefs? Look out!

Nighttrain · Aug 2, 2016

But the limit for CMC is 260rwhp i think

Frank.JD.Perez · Aug 2, 2016

I had about 280 or so, maybe more at the crank with my 98 pi and with my 97 I have about 220 to the wheels currently...it's enough to have fun and get in trouble with. But I need multiple tiers up from get in trouble. I need more like set up the road blocks and dispatch the pursuit Lamborghini hahah. Not that extreme...but it'd be cool