S550 V8 makes 437 on E70 with bolt ons. Should it make more?

[joker4798]

Is 437 normal for mbrp off road headers with cat back, C&L intake? I thought maybe it would be a little closer to 500. Has 30% of timing thrown at it. Tuned on e70 with ngauge and flex fuel kit. Stage 3 clutch peddlers suspension and MGW shifter. Just wondering if people have similar and what there numbers were like. Shop repcommnded changing spark plugs?

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[Silver Bullitt]

I'm guessing that's a Gen 2. My Gen 3 made 416 bone stock.

 

[Furious18]

Dyno numbers vary. Did you baseline it? I try not to get wrapped up into interwebs numbers

 

[CompOrangeFanatic]

Seems pretty close to other numbers I've seen people post on a Gen2. Throw an 18 ported mani, GT350, etc. and you should be in the 450-460 range which seems typical of a FBO Gen2 Coyote.

 

[WildHorse]

Ummmm guys:
Location:
Ft. Lauderdale
As far as dynos take those #'s with a grain of salt.

 

[Freedom]

pretty sure 500whp is the gen 3 guys

 

[bnightstar]

pretty sure 500whp is the gen 3 guys

He is on Gen 2 2015 GT it's in his signature. 437 RWHP is solid number.

 

[Zinc03svt]

Sounds about right Gen2.

 

[Andy13186]

I would be happy with that number with that setup

 

[LxMike]

With factory intake manifold I'd say thats a nice number. You'll need much more than that to make 500 whp.

 

[EFI]

As others said, you are not hitting 500rwhp on a stock manifold Gen 2 even with E70.

It's going to take a CJ, cams and lots of RPM to get there.

437 is a solid number for the stock manifold.

 

[onlyturbo]

My 2015 GT pp(3.73 gears) made 406. Cat back 3" Gibson and on E85R tune.
On a Mustang Dyno, close to sea level at approx 60 deg F morning.
I also was expecting more. But it feels very strong, I am happy with the power it has. Can barely use the power as it is...

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