I am planning or should I say wanting a little more power and sound from my GT. I already have the VMP stage 2 running 10 lbs, but with all of the stock exhaust . I know I am going to add an offroad cat delete H pipe, but what kind of gains should I expect. I know in NA form around 18, but will I see higher gains than 18 HP. I know my boost will take a hit, but I'm trying to decide if I really want to spend the dough on LT's and do both. I was also wanting to add LCA's and UCA along with dark stars, but LT's would consume some of those funds.
HP gains from OR X/H pipe with VMP stage 2
- Thread starter Vert
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I am running just cat deletes and it was a decient improvement for the money. I haven't had it on the dyno since but you can feel it.
What kind of power are you making at the tire with the VMP stage 2 and full stock exhaust at 10 lbs ?
Is your power #'s on 100% 93 octane or an E85 or race gas mix ?
I may be getting a VMP set up for my 2013 auto so I'm curiuos what to expect
I am running a conservative 93 tune with 82mm pulley. Should be in 570's rwhp. Looking to pick up some HP while lowering my peak boost since it will be flowing better.
I had a conservative tune before and went to off road x and it picked up 70 hp total. (With the new tune)
82mm pulley at the time.
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Damn, now were talking. I will get a new tune from Justin or I might finally get dyno tune after the install.
no offense but ive never seen/heard of an 18hp gain from going to ORX/H. the HP gain from switching to ORX/H is minimal, and mostly is a change in exhaust note.
ok so...
Boss IM= no gain
ORX=no gain
Gears=no gain
Shorty Headers= no gain
85mm TB= no gain
CAI= no gain
aluminum D/S= no gain
It must be me pushing the gas pedal harder that got my car from 12.7@111 to 11.31@120
I'm going to start shooting roids into my right leg and go for 9's this year
Boss IM= no gain
ORX=no gain
Gears=no gain
Shorty Headers= no gain
85mm TB= no gain
CAI= no gain
aluminum D/S= no gain
It must be me pushing the gas pedal harder that got my car from 12.7@111 to 11.31@120
I'm going to start shooting roids into my right leg and go for 9's this year
lmfao
I figured freeing up the exhaust and gaining HP would be a little easier on the motor if thats such a thing with a supercharger.
What is actually better ?
H pipe or X pipe design ?
H pipe or X pipe design ?
HP is about the same +/- 1 or 2 HP. The H pipe is suppose to give more low to mid range tq where the X gives more tq in higher RPM's. From sounds clips, the H is deeper in tone compared to the X.
I have long tubes and a catted X pipe as well as a stage 2 Roush TVS... My tuner recommended the cats for sound & said he hasn't seen a loss of power with the cats on his dyno, or his car... I'd wait till your ready for long tubes
Hmmm I find that hard to believe since they are the most restrictive part out of the exhaust. I will have to give Justin at VMP a call and see what they have to say.
lol ok never said any of the above didnt provide a gain, my tuner, who is a reputable tuner on this site and whos opinion i trust other than keyboard mechanics, stated he sees very little gains from the ORX/H swap. now i will say that less restriction=less boost and more efficient motor, for those that understand what boost actually is. so in the long run while i dont believe in NA setups an ORX is really that huge a deal, in a boosted application with the cats eliminated and in combination with long tubes i can see the use.
boss intake-gains in upper RPM
ORX-varies on application
gears-obvious not a HP gain, but will see lower ET's.
shorty headers-gains in upper rpm
85mm TB- small gains in low end, but larger in upper rpm
CAI-personally i believe the intake tube is the only part of a CAI giving gains. factory box setup is a better system than drawing from inside the bay.
aluminum D/S-gains wont be in HP, but reduces rotational mass and allows car to rev to high rpm faster.
and everything in the above list works together to achieve a better flowing motor
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with 93 octane ive seen people hit 620-640 with 82mm pulley with longtubes and o/r x should pick up around 50 rwhp and probably lose half a lb of boost
I'm just going by what my tuner tells me, and he's been tunning mustangs for over 20+ yrs... His 2011 GT/CS w/ a Roush TVS & spray makes over 800+ WHP with cats & resonators...
The new mustang is a well engineered car...
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