evoms s/c + awe exhaust (headers, cats , mufflers)+ rss plenum should make at least 500hp

 

first off, i'm not talking out my ***. i didn't say i beat him. i said it was close. it was without a doubt a faster car, but he didn't run away from me. the 3.8 is a great motor. however, if you look at the quarter mile times for those cars they're very close. i don't need to go to the track to see the difference. i can't go to any interstate in my area and see that it's not that different. given the choice, i'd rather have the 3.8, but 30 hp on a 300 plus hp car probably translates into 10ths of a second diferences. Even on porsche's website they say the S is like 2 tenths of a second faster than the base or something like that. insignificant. if you can feel tenths of a second, then hat's off. you're much more in tune with your vehicle than i am.

as long as you brought up beating a turbo, yes... i can and have beat stock turbos these days. i have also walked 997's and 997S with ease....

 

XXXXXXXXXXXXXXX

 

The rule of thumb is every 10hp is a reduction in ET of .1 sec and a gain of 1mph. I have found this to be pretty much on the nose in my experience with drag racing. The PorscheNA site is talking 0-60mph and granted its only a .2 sec gain in 0-60 but at the end of the 1320 that will correlate to a .3-.4 sec. advantage. Another rule of thumb is every .1 sec reduction in ET is equal to one car length. In drag racing you lose by 3-4 car lengths that is getting your **** handed to you. On the street thats a close race...

You should be able to feel a 10hp increase, will it be significant..no but you should be able to feel it. I can tell you right now that my experience with my exhaust install was a definite increase in performance, was it dramatic...well not dramtatic but above 4krpm the car just pulls so much more effortless.

I have been drag racing since 87 with Mustangs and I found these rules to be very accurate.

Dave

 

Believe me, I have driven and taken people for a ride in my 997S and then immediatley jumped into a stock 997S and there is a VERY VERY noticable difference in 0-100MPH throughout the entire powerband.

I have installed, AWE full system (headers, cats mufflers), GIAC, Intake, Plenum.

 

I'm not trying to break your *****, but I would be seriously impressed if you could drive two 997's back to back, and could tell which one had 10 more hp.

Did you dyno your car before and after your exhaust mods? I think the noise from the full exhaust modification contributies to that feeling of "pulling harder" or "much improved throttle response" I know for a fact that headers will pick up HP (i did B&A dynos), but I couldn't really feel anything. I know the plenum will pick up hp (again more B&A dynos), but I couldn't feel that either. Maybe I just suck

Like I said before, .10ths of a second would almost be imperceptible on the street. And that's assuming that driver of the higher hp car got everything right (launch, shifts, etc).

 

Yeah Yeah Yeah...blah blah blah....sooooooo, when are you going to bring that car to the track and really see if it is faster....or do I dare say...YOU are faster?

Try it it's a blast!

 

There is a simple resolution to this issue, trade your 997 for a GT-3.

 

going to the car meet tomorrow? i want a ride
rob - seal grey 997s cab

 

how bout we meet on 275 and i'll let you look at my license plate for a while

 

yep, i'll be there at 7am. last time i showed up at 830 and everyone was leaving. this is an early crowd. instead of cars and coffee we should do a cars and brunch. i'm not exactly an early riser. i have something to do early tomorrow anyway so i have an excuse to set the alarm and get over there first thing.

 

You are probably right, but a little bit of time with the car I would. Also your post was 30hp not just 10.

No I didnt dyno the car...I was leaving to Japan when I installed the parts and just wanted them on the car before I left...BTW just got back haven't slept in 2 days not to mention the 16 hr. time difference right now..crashing as I speak

Dave

 

I have the complete AWE exhaust system, Evo airbox, Giac reflash & IPD plenum on a 997S. Prior to having the plenum installed, the car pulled 321 rwhp on AWE's Mustang dyno. I do not have any unmodified dyno figures, but 295 rwhp is a representative stock number. Using the customary 17 percent loss in the drivetrain, this corresponds to 386 crankshaft HP. The plenum definitely made a difference. It felt stronger, relatively, than when the reflash was done on top of the other modifications.

I admit that these comparisons are not fully "scientific". I intend to have the car dyno'ed again sometime & will post the results. It would be desirable to run on a similar Mustang AWD machine, but AWE's facility is a 250 mile round trip.

 

i'm quite sure you didn't pick up 90 hp from those mods. if i were you i would go to mustang's website and find a closer dyno. they're out there. you just have to find them. i'm guessing 30-40 crank hp. tops. i've done before and afters for a lot of these mods. they don't make that kind of power.

 

the bottom line is.... do these mods for the fun and sound of it. don't expect a whole lot other than that. i love to tinker, as do you most of you. that is why i recommend doing this sort of stuff. it's certainly fun playing with these cars. just have realistic expections about what'll you see out of it. if you really want a kick in the pants, do a blower or trade it in for a turbo....