turboxs turbo back, please advise!!!!!
#1
Registered User
Thread Starter
Join Date: Feb 2003
Location: NJ
Posts: 78
Car Info: 2007 WRX Sport Wagon
turboxs turbo back, please advise!!!!!
Love my STi, got it on Oct 21st '03 hit 3000 miles last night.
Thinking about doing the exhaust, this will be the fisrt and probably only mod.
Read/heard turboXS is the best one for the car.
Happy with what I read about performance, fit, sound and look.
Refuse to buy it, if it throws my CEL!
Would appreciate all experiences.
I had this CEL problem on my '01 2.5RS, I eventually returned the whole exhaust, don't want that hassel again.
What exhaust does Subaru use for upgrading the STi?
Thanks to everyone who replies.
Thinking about doing the exhaust, this will be the fisrt and probably only mod.
Read/heard turboXS is the best one for the car.
Happy with what I read about performance, fit, sound and look.
Refuse to buy it, if it throws my CEL!
Would appreciate all experiences.
I had this CEL problem on my '01 2.5RS, I eventually returned the whole exhaust, don't want that hassel again.
What exhaust does Subaru use for upgrading the STi?
Thanks to everyone who replies.
#2
Registered User
Join Date: Sep 2003
Location: Sacramento, CA
Posts: 89
Car Info: '10 WRB STi SE / '09 BMW K1300S
I've heard good things about the turboxs turboback exhaust (tbe), too. But at the same time I heard that the APS tbe was an excellent product too. A big prerequiste of mine was the tbe had to be as quiet as possible. I heard people say that the TurboXS was fairly quiet but same for the APS system. The APS website actually published their tested decible ratings for their exhaust systems and that pretty much convinced me to go with their product. Also it's a pretty subtle look, too. Oh yeah, the only bad thing about the TurboXS was some people complaining about the tip melting or warping some of bumper material around it. Read about it here:
http://forums.nasioc.com/forums/show...5&pagenumber=5
Here's a link to the APS tbe
http://www.aps-wrx.com/us_spec/subar...wrx-hoe-r1.htm
I had it installed last week, and yes the APS systems sounds great! It even passed the wife test! The expected gains took awhile...maybe just the computer relearning or something.
Now as for the CEL's, if you do some searching you'll find that CEL's are VERY common with tbe's. The most common is the boost creep problem. Look at the sticky post at the top of the STI Powerplant - EJ2.5T forum. My TBE was no exception. I threw a CEL one day after it was installed. Based on my experience, it might be wise to have your wastegate ported at the same time you're getting the TBE installed. In most cases that resolved most of the CELs. A handful of people, swear that a e-Boost controller solved their problem...but a lot of people disagree with that.
Anyway, if you're willing to get a TBE, personally, I think you'll need to be open to the risk of CEL's. I'm going to get my wastegate ported and hopefully that'll solve my CEL problem.
Oh, and when you said that the TBE was the only thing you'll do to your car, I was like, "Yeah, uh-huh...suuuuuure." One other thing you might consider after the TBE (and when you have the cash) is engine management. The combination of the two can yield a total HP gain of 50+ Now that's what I'm talking about!!!!!
Jason
jason@uspilots.us
http://forums.nasioc.com/forums/show...5&pagenumber=5
Here's a link to the APS tbe
http://www.aps-wrx.com/us_spec/subar...wrx-hoe-r1.htm
I had it installed last week, and yes the APS systems sounds great! It even passed the wife test! The expected gains took awhile...maybe just the computer relearning or something.
Now as for the CEL's, if you do some searching you'll find that CEL's are VERY common with tbe's. The most common is the boost creep problem. Look at the sticky post at the top of the STI Powerplant - EJ2.5T forum. My TBE was no exception. I threw a CEL one day after it was installed. Based on my experience, it might be wise to have your wastegate ported at the same time you're getting the TBE installed. In most cases that resolved most of the CELs. A handful of people, swear that a e-Boost controller solved their problem...but a lot of people disagree with that.
Anyway, if you're willing to get a TBE, personally, I think you'll need to be open to the risk of CEL's. I'm going to get my wastegate ported and hopefully that'll solve my CEL problem.
Oh, and when you said that the TBE was the only thing you'll do to your car, I was like, "Yeah, uh-huh...suuuuuure." One other thing you might consider after the TBE (and when you have the cash) is engine management. The combination of the two can yield a total HP gain of 50+ Now that's what I'm talking about!!!!!
Jason
jason@uspilots.us
Last edited by STiPilot; 04-24-2004 at 11:12 AM.
#3
Originally posted by STiPilot
Oh yeah, the only bad thing about the TurboXS was some people complaining about the tip melting or warping some of bumper material around it.
Jason
jason@uspilots.us
Oh yeah, the only bad thing about the TurboXS was some people complaining about the tip melting or warping some of bumper material around it.
Jason
jason@uspilots.us
Here is the OLD RFL-Ti:
Here is the NEWLY REVISED RFL-Ti(much better)
-Matt
Last edited by STiLL WILL; 04-25-2004 at 04:55 AM.
#5
ANY free-flowing turbo back is prime for boost creep. I really don't know how you would 'adjust' an o2 sensor, but that's more of an issue of either getting the high flow cat or buying a CEL resistor fix.
-Matt
*BTW, here are pics of the REVISED RFL-Ti muffler on my STi
-Matt
*BTW, here are pics of the REVISED RFL-Ti muffler on my STi
#6
Guest
Posts: n/a
ok, first off you're going to get a CEL and boost creep with any catless 3" turbo-back. That's the nature of the beast and it's easy to know why. One, the Boost creep: it's a direct result of decreasing the back pressure on the exhaust and allowing more flow to get out, it's a mechanical issue. All you have to do is port your wastegate and the problem is gone, you cannot fix boost creep electronically. 2nd, the CEL: it's going to happen when you get rid of your cats. Call Sean at www.rallitek.com and get the GP Moto mechanical CEL fix for $30 and don't worry about it. If you want to mod your STi, please do your homework, I can tolorate kids putting AEM cold air intakes and clear corners on wrx's, but not the STi.
Cheers,
Joel
Cheers,
Joel
#8
Originally posted by SlickmisterN
...is that a yellow type r I spy in the background?
...is that a yellow type r I spy in the background?
-Matt
#9
I have a TurboXS (not the RFL) Turbo Back with CAT and ran it 7000 mi without any CEL and NO boost creap.
I just recently installed TurboXS straight pipe to replace my cat and got an O2 sensor simulator from (www.o2simulator.com) and do not have CEL's.
I can't tell if the catless setup improved my performance or the addition of a K&N Typhoon cold air setup was responsible. But one or both have dramatically improved performance.
I also have an EXED from Vishnu that Shiv dyno tune a 100 octane map for me. I'm only running 16.5 psi boost and prior to the catless & K&N setup I was at 275 WHP on Shiv's dyno.
Going to Thunderhill (CA) this weekend so I'll let you know how it works on the track -- proof in the da puddin'.
Rob.
I just recently installed TurboXS straight pipe to replace my cat and got an O2 sensor simulator from (www.o2simulator.com) and do not have CEL's.
I can't tell if the catless setup improved my performance or the addition of a K&N Typhoon cold air setup was responsible. But one or both have dramatically improved performance.
I also have an EXED from Vishnu that Shiv dyno tune a 100 octane map for me. I'm only running 16.5 psi boost and prior to the catless & K&N setup I was at 275 WHP on Shiv's dyno.
Going to Thunderhill (CA) this weekend so I'll let you know how it works on the track -- proof in the da puddin'.
Rob.
#10
Registered User
Thread Starter
Join Date: Feb 2003
Location: NJ
Posts: 78
Car Info: 2007 WRX Sport Wagon
You guys have been helpful and I thank you for that.
You guys are talking about a couple of different systems that turboxs makes, what are my choices?
I think I want one with a cat, does this one throw the CEL and will the O2 sim work on a system with at cat?
You guys are talking about a couple of different systems that turboxs makes, what are my choices?
I think I want one with a cat, does this one throw the CEL and will the O2 sim work on a system with at cat?
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