Pathway to 500 HP

[Dave2013M3]

So you think Billy Johnson's article in MotoIQ is BS? They found 12rwhp with a Borla S cat back.

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[IamCDNJosh]

Your best bet would be to have your local Roush dealer install their PP2 package.

https://www.roushperformance.com/pa.../2018-mustang-gt-performance-pac-level-2.html

 

[Matthewstorm]

Is the PP2 package better than getting the PP1 package and Borla ATAK exhaust?

 

[SpeedLu]

Catback doesn’t free up much if any flow on a NA car. Same on the cai side. Now if he had some serious mods then yes but otherwise stock no

CAI and catback on a stock car are a waste of $$$ unless you're after the sound.

 

[IamCDNJosh]

Is the PP2 package better than getting the PP1 package and Borla ATAK exhaust?

Not sure, I've combined the Roush PP1 with a FP Borla exhaust on my 2015 and I'm quite pleased with the result.

 

[Rod27]

Lol, Just to make sure I am not tripping, Axle backs and Cat Backs are 2 different things right. I'm pretty sure that they are. I just don't know how catbacks horse power gains got in the discussion ,

 

[Jackson1320]

5 inch tip on a civic makes 600hp, ask any ricer.

Ok you got me there

 

[Jackson1320]

Better let STEEDA know their doing it wrong & wasting their time on a CAI & CAT BACK. Cause you know, ur prolly way faster
https://www.steeda.com/2018-mustang-silver-bullet-drag-car

Read bro. Read. On a stock car

 

[Jackson1320]

Billy Johnson did a write up for MotoIq and they got 12rwhp with a Borla Stype catback.

Borla Stype catback

Now this included an xpipe not just mufflers. The baseline numbers are right in line what a stock Gen3 Coyote makes. Interesting...

I think this and the FRPP powerkit would keep your warranty happy and with the feds.

The dyno was done at Palm Beach Dyno, a reputable dyno.

The problem is a dyno can vary from pull to pull buy that much. If you don’t do the test back to back on the same dyno within maybe a hour those numbers are useless

 

[Dave2013M3]

The problem is a dyno can vary from pull to pull buy that much. If you don’t do the test back to back on the same dyno within maybe a hour those numbers are useless

True, but not 12rwhp worth. Palm Beach Dyno is a reputable shop that keeps their Dyno properly calibrated. If it was statistical noise it would be 3-4 rwhp not 12.

 

[AZ18yote]

True, but not 12rwhp worth. Palm Beach Dyno is a reputable shop that keeps their Dyno properly calibrated. If it was statistical noise it would be 3-4 rwhp not 12.

To be fair I have seen plenty of back to back pulls, no changes, same car same dyno vary by more than that. Both boosted or NA. Just playing devils advocate on that one

 

[Dave2013M3]

To be fair I have seen plenty of back to back pulls, no changes, same car same dyno vary by more than that. Both boosted or NA. Just playing devils advocate on that one

I have seen that much on boosted cars, not normally aspirated. I am too a little skeptical. It's just when you see the players involved it adds credibility to the article. Billy Johnson, PBD and such. A lot of times when you see such discrepancies is a low baseline run, that's not the case here though. I do believe an xpipe with a axle back could be worth 5-7rwhp, bit 12.9 actually made me wonder.

A member here tested his Borla Switchfire and got 6rwhp more over his previous midpipe. This was a FBO car as his car was pushing 500rwhp.

 

[deanm11]

I put the Borla S-type on my otherwise stock 2020 GT 10r80, partly because I like Borla's sound and quality, and partly because of the couple of dynos asserting the ~10hp. I don't have dyno proof but I ave logged MAF /airflow and I believe I have the seen the approx. 10hp. I am on to further mods and continue to discern my results in part from MAF readings. (my phase 2 was Steeda closed pro-flow, ported 2018 intake and ported TB. Plus my tuning with timing and fuel for the firs time.. All that, about 25-30hp I think)

 

[Biggus Dickus]

AED E85 race tune - done. That will alone will put you over 500 bhp.

 

[Rod27]

How about Throttle Bodies, would that help?

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