Here are some dyno sheets that I have for some before and afters. For those that don't know me, I have a 07 GT auto. my before was almost bone stock, had spacers, axle back, and ETD.
The Before & After for the headers are pretty much self explanatory
Yeah, his car is rediculously loud. I left before he had a chance to run on the dyno day we did at RRE/RRM but I heard it was rediculous with no muffler. :lmfao:
I badly need to get on the dyno. I wanna see no shit if I can make more power than you. Even without headers...
Will, your manual I bet you will make more than me. Power isn't everything tho, you gotta know how to use it, and obviously have to have the newest version for driver mod. Don't forget the weight factor. Just sayin
depends on what rpm you are looking at. the before and after for the headers was at around 6300rpm. so yes so far the numbers for stock and headers are correct for how you have it.
now if you look at the before and after for the y pipe, its at 4500rpm for tq. But if you look at 6000rpm before was around 212ft lb tq, and after was about 218ft lb tq. For the HP they kept it at the same rpm, almost around 6400rpm. Before 248hp, and after 252hp.
Now with the CAI installed it has gains throughout the power band up until 6000rpm. After that is when it fell on its face. So yes your looking at a 10hp loss. Hope that makes sense.
I also think most people usually use mustang dynos...like someone said FIC is a large part Of that 300hp...Motor mounts, stuffy, Iridium one step colder plugs, Ect
4hp and 16lbs of tq added for 200 bucks, and an easy bolt on.... no one would buy them? Your crazy!! That 16lb of tq is where it is at! I'd give 200hp for 16lb of tq.
trevroar was looking at different rpm's on the dyno graph. like i said above:
4hp, and around 4ft lbs tq anywhere you look in the power band, thats about the highest. you were looking at different RPM's trevroar
So who made that custom Y Pipe for you...I may be interested haha. Could you tell me where the shop is located? And would they know what I mean if I give them your name?
i will def be interested in the y pipe in the near future
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