Actually i'm running a 4" od short pipe, a complete exhaust system to the bumper would be great as it's less loud, but the route under the oil pan and the weight are two great cons about this solution, i did a big work to put my evo 6 tme under 2250 lbs, i think i will keep my ultra short exhaust....

 

Sounds like a monster.

 

Made a little more progress... We're going to re-do the tip to lengthen it a bit more. But its getting closer and coming together nicely. Fits very well.

 

You might want to recalibrate your hand sales. Your not gonna drop 75lbs. As for the 4 inch Bs. When comparing it to the ****ty perrin exhsust you are replacing it with thst is already restrictive then yes your exhaust will make gains. So will a properly built 3 inch unit. The turbo you pictured I hope is jot what your planing to use. Looks like a 3.0 vband housing. So again I do not see you picking up any worth while gains over s lighter 3inch exhaust. I dont make hulk hogen power like you do but I believe I made enough to see any gains from my old 3.0 to 3.5 inch exhsust. I saw nothing. And if your under 900 i dont think you will either. Well from the perrin to the new one you will. But from a properly built 3.0 you wont and again if you do its minimal

 

You keep contradicting yourself... First it was only if you make 900.... Then I demonstrated that on a Dynojet this car would make that and then some.

Furthermore, I already told you what I made through 3inch. If you didn't make what I already made why did you bother putting 3.5inch exhaust on your car? No wonder you didn't pick up any power, genius. If you went a best of 141mph, that's about 500whp on a Mustang dyno. We've got a guy in our area who made right about that amount on a Mustang dyno and went just as fast as you have.

So, I've already made about 200hp more through 3 inch than you have, and I know for a fact I've found the limits of that diameter tubing. I could have just as easily gone 3.5, but you know why I went 4inch? Because I can. That's why. Oh, and to **** off know-it-alls like you

ps. consider for a moment the power this car made through that sh**** perrin exhaust, and then compare it to what you've made through 3.5inch.... LOL!

 

Your math is wrong again.But do what you have to do and let's see this car do sub 8s to merit it needing this exhaust. A few shops run in the 8s with 3 inch. Good luck with your project. At first I had interest and when i asked for a reason to your madness over what was already proven to work your comment showed your character. Now I have no interest.

 

Thank you. Now please move on along there, little fella

 

Great work on the exhaust setup.

 

Any reason you went with a Vibrant muffler instead of like a Burns stainless bullit ? This is the muffler ill be usen on my project.

http://www.burnsstainless.com/sm-400-550-12.aspx

 

Exhaust is aluminum, not stainless....

 

I am sure you do not want to here this either but i also agree with evodan. your only going to see gains ''miss leading gains'' over that Perrin exhaust. if you were to put a real 3 inch exhaust on the car and then do a test your gain will be minimal if at all. Not to mention your going to have less ground clearance with the 4 inch exhaust. but you can believe in whatever it is your fooling your self with. lets see this car run sub 8s high 7s to hold up to this ''supra'' style exhaust.

 

I don’t think many will doubt it, but you gotta keep in mind, depending on the length of the 3’’ exhaust, the pressure drop per unit length due to frictional losses is a lot greater for those running the full length exhaust vs short exhaust going out the side of the front bumper. So, using a 4’’ all the way thru, will reduce these friction loses, but at the price of decreasing flow velocity (spool). ofcourse this is more noticable for those making higher power, as the loses are more noticable.

Also on the hotside size note, our stock turbo O2's are around 2.5'' if I am not mistaken, and using a 3'' still results in higher gains. so correlating the size of the the outlet to that of the tubbing is irrelevant imo. people with stock turbos should be using 2.5'' exhaust if thats the case.

Either way, let’s wait and see what his setup results in, I think if it doesn’t make any power, it will atleast educate us all!

 

im only replying to your post. i agree a side exit VS a full exhaust makes a difference. in case i was miss leading i was talking about full exhausts only. STM runs a 3 inch exhaust on a car that runs 8.7s @ 167. BR has more 8 and sub 9 second cars all on 3 inch exhausts. the OP'er is comparing a bull **** perrin exhaust to a real ''in his case'' 4 inch exhaust. yes there will be a gain but it is a miss leading one IMO. if he was to put a real 3 inch exhaust on the car i do not see any gain. and being he is also looking for weight reduction a 3 inch would be lighter.

as for his turbine housing and the 3 inch Vband. i am with you 100% on what you said but i only brought that into the equation because i said i do not see that turbo he posted pics of ever needing a 4 inch exhaust on it. i asked nicely if he was keeping that turbo or going to something else but he seems to have a problem with talking. so let him figure it out.

 

What happened to "now I have no interest?" You just can't help yourself, can you?

Listen, you just need to face the fact that I HAVE A BIGGER PIPE THAN YOU!

 

Ground clearance will not be an issue. The bottom of the pipe will be about even with the bottom of the side skirts once we are finished with it. Besides, if ground clearance is the issue, then I shouldn't have put the CF front lip on the car, but I've never had a problem with it. The lip is much lower than this exhaust will ever hang.

This car will NEVER run sub 8s and high 7s. How many Supras have done that even making over 1000hp? Most people could never drive a manual-transmissioned car to those kind of times (and I include myself in that group). This car would have to have an automatic in it, and be lightened up ALOT.