2021 Mustang GT Premium - Looking to build a little extra oomph but stay NA

[Mike-S550]

This thread is great.

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[15GTPPinCO]

Long tubes and high-flow cats. Xpipe, a CAI, and a tune. However, you're getting close to forced induction. $3300 for just some bolt ons. Superchargers, with the tune, start around $6500 and will give you an insane amount of power. You could always add a 75 shot of N20 for about $1,500, but it's a royal PITA.

 

[K4fxd]

.why spend the money for 11hp?

What you conveniently refuse to see is

5000 RPM gt 350 is 15 hp higher
6000 is 15 higher
6500 is 10 hp higher
7000 is 10 hp higher
7500 is 15 hp higher.

You know area under the curve.

 

[AZ18yote]

I asked my tuner for a tune that maximizes my mods, but not to push it to the edge... he believes he can get 18-20 ponies and more on E85... if you subscribe to the 20% loss rule (through the drive train with 10R80), I am close to 600 at the flywheel. If I want more I'll get the Whipple... then I'd need to move to 315/35s in the back. My 305/35s have a hard time holding what I have. While we are on the topic of HP... a good way to "find" HP is to get a solid, lighter drive shaft. No deflection and less spinning mass.

Agreed allows to put more down to the wheels. I went the CF QA1 route personally. Speaking of wheels, lighter options follow the same principle. Less rotational mass, less parasitic loss. Allows to put more power down.

 

[NASteve]

What you conveniently refuse to see is

5000 RPM gt 350 is 15 hp higher
6000 is 15 higher
6500 is 10 hp higher
7000 is 10 hp higher
7500 is 15 hp higher.

You know area under the curve.

I give up, have fun spending money on something that really won't make a bit of difference, again weather changes will make the difference up.

 

[K4fxd]

again weather changes will make the difference up.

So you think the GT350 manifold suffers from weather changes and the 18 up does not?

I think you are saying the conditions changed enough it the 30 to 45 minuets it took to change the manifold?

I'm pretty sure the posted dyno graph is corrected numbers. However the posted real world results speak for themselves.

 

[K4fxd]

Some how I ended up with an ASE test site popup.

Yep I can still pass high enough to earn ASE Master tech. I'd go take them again for real if I had enough current hours.

 

[Jaymar]

Some how I ended up with an ASE test site popup.

Yep I can still pass high enough to earn ASE Master tech. I'd go take them again for real if I had enough current hours.

I can't seem to find it now but didn't you actually test both the '18+ truck manifold and 350 manifold back to back? That was an interesting read.

 

[K4fxd]

I can't seem to find it now but didn't you actually test both the '18+ truck manifold and 350 manifold back to back?

Yes I did. With an A6 the truck manifold hangs with it surprisingly well. Due to better TQ and HP numbers after the shifts. With the A10 the 350 mani kills it WOT 60 to 130 times.

 

[K4fxd]

No I did not try the manifolds on an 18 up with A10. The A10 being better is calculated from RPM drop after shifts. The A10 allows the GT350 manifold and the 18 up GT mani to stay in the powerband each shift where as the A6 allows the RPM to drop far enough the higher RPM manifolds are below the sweet spot and the truck mani is.

 

[cahouston]

If you had a 2021 Mustang GT Premium 10R80 what would you recommend to bring a little extra oomph and still be N/A and not need the E85? Possible on 91 or 93?

Thinking 430-450 whp?

I believe this video shows the guy doing 450 whp from just bolt ons without long tube headers?

2018+ Ported Intake Manifold
JLT 120 CAI
Custom Tune

I may have missed it in the manifold debate. Have you been on the Dyno to get a baseline RWHP figure? If you want 430-450, there are cars out there which have put down numbers in that range bone stock. You may already be there or.close to it. If you Dyno 430, small changes may be all you want. If you put down 410, you have a bit further to go.

I personally care more about ET and MPH in the 1/4. Dynos are a good estimating tool but better to measure increases after mods when using the same Dyno.

 

[tosha]

There is no E85 in Ontario...

@MCS , look, you already know the right path and just trying to delay the inevitable, but I bet you'll just spend the money twice instead of once . Roush/Whipple will get you where you really want to be, and on pump gas.

Btw, you would be surprised how well the car keeps good daily habits, at least with Roush SC and tune. Unless you step on it, it's just like NA car.

 

[MCS]

the right path and just trying to delay the inevitable

Resistance is futile?

Yeah, I've already put feelers out there to see what's what in the SW Ontario area. Need to get this damn popping/grinding lowering springs/strut bearings sorted as well as the aesthetic parts circus dealt with then I'll see what the next steps are.

There is no E85 in Ontario...

That is... wow... You know I didn't even think to ask myself this question? LOL Now I'm going to have to look just to satisfy my curiosity.

 

[tosha]

That is... wow... You know I didn't even think to ask myself this question? LOL Now I'm going to have to look just to satisfy my curiosity.

At leas that was my conclusion from the research. If you fing anything, please let me know.

 

[Donm308]

If you had a 2021 Mustang GT Premium 10R80 what would you recommend to bring a little extra oomph and still be N/A and not need the E85? Possible on 91 or 93?

Thinking 430-450 whp?

I believe this video shows the guy doing 450 whp from just bolt ons without long tube headers?

2018+ Ported Intake Manifold
JLT 120 CAI
Custom Tune

Thats me. Want to stay N/A and stay 91-93 pump gas and maintain be able to get an inspection sticker.
Best bang for buck IMO is Ford Performance power pack 2. Very reasonably priced and worth it. It also maintains your manufacture warranty (can’t do it yours though). Watch this short video and pay attention to low end gains.

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