The quality of Invidia components is usually pretty good, good welds, tight bends. RSR worked with them for awhile on various projects. The piping they use though is a bit heavier than Tanabe, HKS, or Helix.


Cheers,

Gary
Gruppe-S

 

I guess it depend on what you call JDM. My HKS hiper taper, greddy (except for TI), Apexi (except GT), tanabe, RSR all taper. Hardcore JDM like Garage HRS and Top fuel don't but then how many ppl run those vs the popular brands.

Not sure if you helped me on installing the V1 but it def rattle against my 03 subframe no matter how I adjust it. I went with Tanabe 70mm with no clearance issue and made pretty good numbers on the Mustang.

 

The Invidia DP clears the ACD on the 05 VIIIs and 06+ IXs very well; I have it on mine. No worries there. You might want to get a testpipe that has the O2 bung in it though, since your IX has a bung in a different spot from the VIIIs.

 

Good choice The WORKS O2 Housings are on sale and are compatible with either of our Exhale 70mm or 76mm DPs. As mentiond before, you'll get top notch quality, fitment and performance.

 

anyone with the Turbo-XS downpipe? I know that its a 76mm dp no taper...

I will install my TXS RFL Ti catback next week and i am looking for the downpipe to match...

...and for the time being the stock cat until i save money to get a 76mm HFC (either Randomtec, helix, or works)

 

Which ever size DP I decide to get, do you guys recommend or think it's necessary to get ceramic coating for evos with ACD. I see a lot of discussion on performance of 2.75" vs 3.0" but what about heat soak into the oilpan and ACD...do I need to worry about that?

 

I have the TTP DP on a IX. No problems with it, perfect fit in my car. They have it for like $160.00 on their web site. I was gonna have it coated but didn't want to wait.

 

The TXS dp is a tough fit on the IX. You should look into the Perrin HFC as well: well priced and it has the bung for the IX.

 

There's a decent amount of airflow down there, and a good amount of space between both; I would not worry about it.

 

A good amount of space if you go with a 2.75" but with the 3" your only a few mm away... This ceramic coating question is the only thing holding me back from buying a DP, cause I don't want to shorten the life of the ACD or add additional heat to my oil...

 

lmao 2.5inch

go with buschur racing, megan, any 3'' downpipe will do the trick

 

Coating makes a big difference on the Subies as all 4 runners wrap around the oil pan. As for the EVO, we don't see any oil temp increases changing from stock. So yes there may be a small benefit in terms of oil temperature as a result of coating, but you probably won't be improving anything in terms of reliability or performance. The shop car has the Helix 76mm downpipe. We're probably going GT35R / 2.3 stroker in the next few weeks, I'll try to get some deltas on a 2.75" versus the 3.0" with this new setup, as I'm sure it'll be pushing out a lot more exhaust gas.

Cheers,

Gary
Gruppe-S

 

hey gary, you mention the helix stuff a lot so i'm gonna ask yah... is the helix pipe heavy compared to a lot of other dps?

i felt that my helix version 1 was pretty darn heavy. now have they made revisions to the weight? i think the difference between the helix pipe and an lpe pipe was huge. the lpe i could swing around with one hand like a tennis racket... the helix felt like a lead baseball bat.

 

Kind of puzzled on why you would pick such an odd test subject, when this topic is about the EVO9 w/ a stock turbo.

Looking forward to seeing your stroker GT35R though. Let's see if you can beat my hp record on your dyno with pump gas and my stock motor.

 

Yes, the V2 downpipe is a bit lighter. The V1 downpipe was at a different factory (which is still manufacturing for a few brands you see on the market), Helix decided to switch to the new factory due to tighter tolerances and better materials / craftsmanship. All of the Helix exhaust components are now a bit lighter with tighter tolerances.

Cheers,

Gary
Gruppe-S