I'm picking up a 87 Turbo 2 this upcoming Saturday, bone stock and rust free with 82,000 miles and just looking around the forums for suggestions and reading the stickies. I don't see to many other suggestions for a turbo'd fc other than the Racing Beat dual exhaust. I was really looking forward to finding a single and all I've really seen is that Dual. Let's educate the forum on where we can find some performance single exhausts, who makes them, price wise, and how much performnce that they will produce. Thanks guys

 

tons of options available, check in the classifieds for good deals.
Its a general concensus that racing beat makes the best system, but it is priced accordingly.
If you remove the Cat and upgrade the downpipe as well you will have boost creep, which means you will hit boost cut and will not be able to enjoy your car. So buy a cat back first, then buy a standalone or some sort of fuel control computera and then upgrade the downpipe and straight pipe

 

Any and all open exhaust systems should give you a noticable gain in performance. An upgraded intake system is not a bad idea either.

The Racing Beat setup reports big gains (up to 59hp), and has one of the best sounding exhausts that I've heard on an FC.

A manual boost controller can keep you from hitting boost cut and they are only about $15.00.

A FCD allows you to up your boost a little without hitting the "wall". They range from $30-$50(used) - $120 (new).

Keep in mind that if you up your boost on your S4 you need to have your waste gate ported, or you can destroy your turbo and/or engine.

 

I disagree on getting a boost controller. A boost controller is good if you want to raise boost pressure, but it won't lower it. Getting the wastegate ported is a far better way of controller the boost to avoid overboosting.

I think having the fuel cut might save a motor untill a person has a better way of controlling fuel and ignition. A fcd will trick your ecu in thinking your running less boost pressure so your ignition timing is going to be way to far advance running the chance of hurting your motor.

Save your money and get an RTEK stage 1 atleast until you figure out what route or where you want to go with your car. More info on the RTEK chips. Click the link. http://www.digitaltuning.com/index.p...age=1&ecu=S4T2


For a cheap single setup you can go with the Corksport single exhaust system. Good quality system and comes in a 80mm size that will support some decent power.

 

Wastegate porting is essential for engine longevity especially if you plan to run a freer flowing exhaust and or intake.

For exhaust, I run a 3'' HKS downpipe to custom 3'' piping that mates to a 3'' straight through Magnaflow muffler. I had it full 3'' straight pipe for awhile but that sounds obnoxious and even when you're off the throttle the turbo drone is suuuuuper loud. Got the magnaflow to quiet it done some and now it has a deep, sinister tone. I wish it were a little quieter but at the same time you can't beat the performance.

 

I'll will look in to porting the wastegate, I was looking at the Apexi Gt Evo exhaust for the Fc. Any word on those? I just want a single exhaust, really not a fan of the dual =P

 

I have an Apexi GT spec exhaust with a high flow cat on my s4 TII and I love it. Nice and deep, not raspy or tinny at all it's huge. I creep maaaaybe to 6.5psi.

A manual boost controller will not help boost creep, will only raise your boost. Like everyone else says, port the wastegate now and not worry about it later.

 

Lot of money for a RB exhaust. I still have the factory OE mufflers along with a Bonez DP and Bonez cat, stock intake and run 11.5 lbs and no problems with the Hallman MBC, no creep S5. Of course it's a GForce ecu along with a FD pump, everything else still stock.

 

The Apexi Gt spec exhaust... does it come for the turbo'd model Fc because I'm looking at the website and for the FD it says Turbo but for the FC it doesn't. does that mean that that exhaust is only for the N/a Fc or is it for the turbo model as well. Thanks in advance.

 

The cat backs are interchangeable between turbo and NA. I had it on an NA then I bought a Turbo and switched it over. In reality, the GT spec is probably a little too big for the NA.

 

Okay! Sweet thanks for the help. I was a little confused because I was looking at a lot of exhaust websites and they were all the same way. I think when I pick it up this weekend I'm going to go with the Apexi Gt Spec exhaust and then order my stance coil over's. Once again thanks for you help.

 

What do you mean check the classified's for good deals? Sorry I'm a noob to this stuff haha, I'm guessing you mean don't order the exhaust off of the main website say... Apexi? haha?

 

Hey guys I have a question, if I port the wastegate will I still have fuel cut right?

My engine is pushing 11-12psi and sometimes I feel a fuel cut at those psi. The engine only has a downpipe and everything else is stock, I just dont know if my wastegaste is ported or not since I bought this engine recently and swapped it into my starlet

 

He's talking about the classifieds section here on this forum. People have all kinds of stuff available for good prices. But if you're set on the GT Spec, don't bother, I never see them go through there.

Fuel cut happens at about 8.6psi. period.
So if everything on your car is completely stock except your downpipe, and you're creeping to 11-12psi, your wastegate is undoubtedly not ported, and you must be running some sort of fuel cut defenser. Without some way to control fuel to support that kind of boost, you're going to have a dead engine very soon.

in i direct answer to your question, if you port your wastegate to the point where it does not creep, it will eliminate fuel cut, but ONLY because your boost won't go over 8.6psi.

 

If you want to go with the single exhaust look, I went with the HKS HI-Power Silent Exhaust. It was pretty pricy (Around 600 new) but sounds great. I also went with Racing Beats down-pipe and presilencer. Running 2 presilencers and you can barly hear the exhaust. Has a nice deep sound. I didn't want to sound like a ricer, thus the 2 presilencers, but maybe you like that sound. Just a thought.

Also, with upgrading your exhaust you should expect boost creep. Now, I agree your wastegate should be ported especially since you have an S4, but realistically you won't do that by just upgrading your exhaust. GET A FUEL CUT DEFENSOR! If you do not it will cut fuel to the rear rotor and mess up your engine. If you have the time to port, then do that, but in the mean time just get a FCD. http://www.rx7store.net/product_p/fcd86.htm

Now you can go with RTEK, but the question is are you going to be running more boost and do you need a system like that? I like RTEK. I'm going with the RTEK 1.8 eventually, but in the mean time I just got a FCD.

As far as the Corksport Exhaust goes, I live in WA and have been to their shop. I run their radiator, fan shroud, radiator panel and oil cooling lines. As far as their exhaust goes, I know it is LOUD! Thats why I went with HKS, but what you are looking for could be different from what I wanted. Good Luck with all this.

 

I agree with RX7Racer46 above, you will need a FCD. I also have the HKS Silent High-Power with a downpipe and cat delete. I love the sound and the look. With intake and exhaust, you'll really want to port your wastegate. My S4 turbo creeped to 15psi if I wasn't careful, I couldn't redline 3rd or 4th in fear of over boosting. It took me 2 years to get brave enough to tear it apart and port the thing. It'll still creep a little, but now I can redline all the gears and it hasn't gone over 10psi yet. It's not super difficult and you'll learn alot about your engine in the process. Basic hand tools and a dremel are all that's needed.