I'm looking into adding the Th.Fab. DP/MP to my stock catback on my 91 TII. Any one have this setup or something close? How's the sound, power, boost increase?

Thank you all!

 

It's a 1pc setup from the turbo to the exhaust. deletes precat/mp/main cat.

craftsman ship is good. basically it's two flanges, two 90 degree mendral bends.. and some more pipe welded together. nothing fancy but simple. My car feels alot stronger but I haven't gotten on it much since I put the pipe in due to boost cut (fuel issues will be resolved by new years if all the parts arrive soon )

 

If It doesn't work out, I have a customized Stainless Steel Brullen made Down Pipe specific for your application. Bolts directly on to the stock Manifold.

 

https://www.rx7club.com/forum/showth...hreadid=139747

 

My very first mod after I put in the guages was the thunderfab dp/mp, walbro 255, and fcd. You will notice a HUGE increase in power. With the stock catback you will hear a different kind of iddle. It's hard to explain, but with the stock catback it's pretty sneaky when people are trying to judge your car. Yeah it's a lil stinky, but I've learned to live with that. I would reccomend it. It's a great value, and they can weld in a EGT bung for 20 bucks extra. I have no complaints.

 

2 90 Degree bends? Thats a rather sharp bend for a dp/mp don't you think?

Did you mean to say 45 Degree?

 

Well, I just don't want it loud. Been there, done that. I'm trying to keep myself from falling into the mod pit. I want to stick with the Walbro, SAFC, MP/DP, FCD, TID mods and leave the car as-is afterwards! This setup should be good for ~250hp and be (I hope!) non-fuel starved.

Thanks all,
B

 

Hehe, I'm starting to wish I would have done something similar. I just want to do full exhuast with safc, 720 secondaries, and a cheapie boost controller and I swear I'll be done messing with the car. As far as not wanting to be loud...with the stock catback on it's a little louder than stock, and like I said the idle is different, but it's still not loud at all. You have an s5 so I'm guessing you willbe boosting....8-9 pounds maybe with TID and dp/mp. Even creeping to 10 with the walbro you should be fine. I ran 11-12 pounds daily with just the walbro, although I didn watch my EGT's like a hawk.

 

i have that setup... TF into the stock catback... it god a deep metallic sound to it, and has a bit of buzzing if you accelerate briskly without flooring it enough to boost