ShIvER[PT]

what U guys think of that ? what width are the stock pipes ? how much boost gained?

im thinking of stuff for me and for a friend that has a 87 Rx-7 TII and he's cheap at the moment

peace

ShIvER[PT]

I meant: U think that it will have a efect as good as ie : rb turbo back ?
include ur opinion, experiences etc

ShIvER[PT]

*bump*
If I expressed myself badlly just tell me ! :P

hugo20

i guess nobody tested that king of setup
Try it and give us feedback ! Maybe ill do the same, cause my fartcan make too much noise for any street aplication

Parastie

You'll gain some hp, maybe 20, but i wouldn't expect more then that.

Also, bumping twice within 30 minutes is a good way of getting banned.

Impreza2RX7

I put on a 3" DP/MP before my catback and picked up alot of power. He should see a good gain, especially if he has old clogged cats on the car. He won't be disappointed, I assure you of that.

hugo20

anyway, the stock rear section is like 1" 1/2, so 2times 1 1/2 = 3" :P
So, i guess it will be nice, and a much more police friendly

ShIvER[PT]

GREAT!

sure thing Ill give feedback!!

"Also, bumping twice within 30 minutes is a good way of getting banned"
I only did so cause lots of threads got new posts so my thread went down really fast. anyway, next time Ill wait more time.

thx guys

keivi

It does'nt work that way, there is math involved.

3" - pi*1.5² = 7.068in²
2x1.5" - 2(pi*.75²) = 3.534in²

quite a difference if you ask me. You will need at least dual 2.25" pipes to equal the flow of a single 3"

2.25" - 2(pi*1.125²) = 7.952in²

DerangedHermit

The racing beat exhaust system for the TII has been dyno proven to add ~50 hp. Just go buy that .

ShIvER[PT]

right! :P

oh well I guess it will have to do until I get the money to replace the stock muflers

thx again

ShIvER[PT]

it's not for sale here on portugal.. I might check if I can get it from UK or sumthing when I have the money

91mazdarx7

if i were you i wouldn't spend all that money on a exhaust when it only gives little gains just go for the racing beat full turbo back exhaust if you can find somewhere to buy it also i got a question of my own im about to but a t2 and it has a custom 3'' dp to stock cats to a apexi single catback this didnt give any more then 20hp or so right because of the cats if i get the rb 3'' dp and pre silencer and custom that to the apexi i would pick up around 20 more hp right can someone help me on that

Impreza2RX7

Could you please decipher that post? What do you mean a exhaust wont give more power? It increases flow and turbo spool-up, and the boost also creeps upward. The Racing Beat Turboback is rated at 50 or so HP, and I'm sure a 3" single turboback makes alot more power than that..

Fritz_X

iTrader: (1)

I did this it built to 8.5 pounds and then my motor blew....beware.

--Fritz

torean

did u have ur FCD?......it also helps with a aftermarket boost guage..and keep an hawk eye on it....dont let it go above 7

Impreza2RX7

How many miles were on your engine when it blew? Did you have a FCD? Were you watching an AFTERMARKET Boost Gauge?

Where did that magic number of 7PSI come from?

91mazdarx7

let me clear it up yes an exhaust gives very good gains what i meant by that statement was that why spend all that money on an exhaust when you go cheap at the end and dont replace the mufflers sorry if my post wasnt spaced out i didnt use any punctuation so it might not have made to much sense anyways can anyone answer my question about the t2 i am getting about if i replace the cas how much more power will i get

Fritz_X

iTrader: (1)

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/wideband-boost-gauge-fcd-stock-airbox-still-blowed-up-355061/

Wideband FCD and Boost Gauge. Stock Airbox as well.

--Fritz

NuTbAgSaN

i know of a 10th ann. with that exact setup, 3" turbo back to stock mufflers. ive never actually got a look at it, but i hear it works great, while keeping it looking all stock.