Alright first off this is not for me. This is for my friend who owns an unmodded s5TII. He has had the car for quite some time and it is beautiful as far as s5TII's go. The thing is immaculate 45k original miles, super pampered. Well anyway he decided he wanted more power, not a lot but more. He wanted me to put a package together for him for things to get. He wants somewhere in the vicinity of 250hp. The general idea I had was.

Apexi Intake
Racing Beat Cat-Back
RB FCD
Maybe FD fuel pump?
Manual or Electronic Boost controller.

Who thinks that would be sufficient for 250? I mean 250 flywheel horsepower btw. I know the stock intercooler would be sufficient, and I don't want him to go DP MP because we have emissions in Ct, The FCD obviously to get rid of factory fuel cut. I was thinking he might need the FD fuel pump to keep up with the added boost but would he need 720 secondaries? I was hoping not but wasn't sure.

If anyone has a better setup to get this guy to 250 flywheel or wheel hp let me know. I am modding mine reliability over power so I don't really know how to get the most out of the least.

Also do you guys think that 250 would necessitate an SAFC?

Thanks for whatever help you can give.

--Fritz

 

A DP will still pass, just not an MP. DP's pass CA emissions with a cat still in place. A high flow cat is probably a good idea as well.

 

I was thinking a Bonez High Flow, but I wasn't sure if I could get 250 without it. I was aiming for moderate hp and minimal modifications.

--Fritz

 

Without the Racing Beat Road Race Exhaust, u aint gettin nowhere to 250hp. With the RB exhaust u can raise ur boost higher to a safe psi range of 10-12 psi. If you have the catback system u would need to boost unsafe range of psi to reach 250hp. U can always bolt the RB exhaust on and off when emissions come around. Thats what I'mma do for my S5 TII. Look at the dynos and those numbers are more than enuff proof for u.

 

ah, no.... any 2.5-3" DP will do. you can go with a "turbo back" system aswell.

just port your wastegate and go with a 3" TID and do what you mentioned in the first post Fritz.. just keep the stock main cat.

remember, he's shooting for 250fwhp...

 

http://fc3spro.com/TECH/FM2W/power.htm

 

Since he wants to keep emissions he can just get a 2.5-3inch dp and get a high flow cat and a catback of his choice if he chooses. The cat will help keep the boost levels safe without upgrading fuel components besides an upgraded fuel pump (walbro). I would recommend getting a corksport 2.5 tapered to 3" dp and a bonez high flow cat that will bolt directly up to that an the stock catback or almost any other aftermarket catback. Get an intake and FCD. Depending on how much PSI will be boosting you may be close to that goal. You may need a boost controller to help. You shouldnt need an SAFC, I ran my 89 TII with the RB turboback and walbro pump with Apexi power intake and it was fine. I was still boost creeping slightly at that time as well.

 

Shooting for 250hp at the flywheel (~210hp at the wheels or more with a good clutch) does not require you to get a turbo-back exhaust. This should be acheivable with the following:

TID + cone filter
A good cat-back
FCD which may or may not be needed

 

newb here whats a fcd

 

Fuel cut defenser get one. 90 bucks
also get a walbro 255 fuel pump from ebay. They are like 85 shipped. don't spend extra money on a third gen used fuel pump. Also take all 4 injectors out of the car and send them off to be cleaned. And someone already mentioned porting the wastegate. After all this you will have a car thats ready to start playing with. If you don't you will be getting what all of us in the rotary world know well and thats a rebuild.

 

Sorry, this ain't gonna make it. The exhaust is too restrictive. My S5TII, Bonex dp,hi flow cat, and cat back, only pushes about 8 PSI. I went to a G Force computer upgrade now running 10/11 PSI. Go with the RB turbo back and install a 3" Random Technology cat. It will pass inspection and boost will be high enough to achieve the 250HP. Upgrade the secondary injectors and a hi fow fuel pump. FD fine, or Walbro (loud). FCD will also be needed to insure no fuel cut.

 

Thats exactly how I blew my motor.
You need to port the wastegate anytime you open flow. The boost creep will kill your motor.
A FD3S is 255hp stock and yes a FD fuel pump will work better on a 250 HP car. The Walbro pushes the stock fuel system to the limit and your gas milage will suffer. I've done both fuel pumps.

 

I would say that all depends on how clogged the cat converter is. With a clogged cat, no doubt that would be hard to do, but with a newer stock cat or maybe a higher flowing cat, 250hp at the flywheel shouldn't have to require a turbo-back to acheive.

 

if the car is in as good a shape as you say all you need to do is get the rtek7 chip,
a good blow off valve,an intake of your choice and the full racing beat turbo II exhaust kit period! take the car to a performance shop and put it on the dyno and if is'nt putting down atleast 250 you better get another engine cause that one is beat.

 

For 210 at the wheels. a simple DP w/cat will be more than sufficient. Obviously rework the wastegate, manual or electric boost controller, and an FD pump, FCD (or the rteck ecu) and you'll be fine.

 

Sorry to bust your bubble, but with a dp, and a hi flow cat , there's no way to get to 247 HP-210 RWHP. Like I said with the Bonez system it only went to @ 7.5/8 LBS max. Not a heck of a lot different then the stock system.
Just remember RB only states it will give your 59HP max increase @ 220RWHP with the entire turbo back system, and that's sugnificantly different than a stock sytem.

 

thats what I'm pushing for 250rwhp....
The car had the RB turboback before I even got my hands on it.... I'd like to know how close I am someday soon..