I've heard that the flex joint isn't necessary since the o2 housing-dp uses a donut gasket and spring bolts. Haven't had a chance to get under the car to check it out yet.

 

OHHH, this is good to know. I've been wanting to buy the dc sports dp but have heard too many variations in fitment for the 05+

 

i was feeling the greddy evo 2 not that load over stock and is pretty good priced....i personally still want a flex section just to be safe than sorry...but yea im looking into like works drop-in filter, the greddy and a LICP, custom tune with boost raised trough the ecu by a few psi.. we have 93 octane around here and 94 if you know where to look so yea what d/p with a flex you guys reccomend ...ohh and i want a hi flow catback since around..how is the busher-wartalon package exhuast sound wise????? or do i have a better setup going.... im looking to hit like 300-350 awhp on a dynojet with stockish sounding car.....

 

The Evo2 Greddy CB is an excellent choice IMHO. I went to an Evo meet up at the performance shop and listened to several. The Greddy just sounded way better than anything in my book. Very mellow at idle and cruise.... while still letting itself be known at WOT. The others sound too fart canish to me.

 

I think I only saw one person post about the Turbo XS. Is there anyone else? I saw a deal and wanted to know for shizzle. TIA.

 

Absolute garbage. Poorly fitting, extruded thin metal pipe requiring a overly large proprietary donut gasket, custom hardware, hits both crossmembers. There is a like new one in the dumpster outside if you get it before the garbageman picks it up.

 

I'm running a Perrin 3" acd compatible dp in my EVO9, however, from my experience the tanabe 2.75" is a better downpipe than a 3". the 2.75" provides more low end tq and response with no sacrifice on pump gas. I'm doing a swap to the small downpipe and will document the differences.

One of my customers has a car with identical mods as mine except he runs the 2.75 and is making 10 more wtq several hundred rpm sooner than mine with a 3".

 

Not to restart the shade-tree-mechanic-turbo-backpressure-myth war again, but even Garrett will say your noted increase had nothing to do with the .25" reduced diameter of the downpipe itself. They will go on to say that it could have been resistance in the routing of the first pipe, or most likely the inlet/outlets of the pipes themselves that had the greatest over all effect.

However, don't take my word for it, PLEASE call them up!

 

Does any make a titanium downpipe?

or a full titanium TBE?

 

the dealer for hks, claims that the HKS fits perfectly... just do remember to heat rap it, cuz its close to the oil pan... dont wont the oil to heat up for no reson....

 

Yeah awesome dude. Replace a 2.5" downpipe with a 2.5" downpipe. Makes perfect sense to me, especially since this HKS pipe is $400.

 

im looking at the WORKS thermal coated o2 housing and WORKS thermal coated 76mm DP. they look like good pieces and i havent heard anything bad about works yet.

 

I've custom dyno tuned many EVO's with all sorts of combinations. What I observe, is what I observe, no book no matter who its written by can change what happens in the real world.



Here's what my car did bone stock and with a stage 0 tune (mbc/dropin filter/tune)

Clearly no slouch in either hp or tq



Here's what it did on stage 1 (TBE 3" all the way thru/Drop in/MBC/Tune)

Still not bad, but not great IMHO. Many of my customers cars with an EVO9 have eclipsed over 300 wtq on this same dyno using the 2.75" dp with even stronger top end!

Don't believe me? check this out...



Stage 1+ EVO9 (Tanabe 2.75"dp, Garage HRS 3" catback, 3" test pipe, drop in, mbc, fuel pump, FR replacement manifold, Tune)



Stage 1 EVO9 (Tanabe 2.75 inch dp, Garage HRS catback, 3" test pipe, drop in, MBC, Tune)



EVO9 stage 1 (tanabe 2.75" dp, Apexi Noir stealth quiet exhaust, 3" test pipe, fuel pump, mbc, drop in, Tune)

These cars are all tuned in the same fashion, if anything I've spent more time on my own car as I am not limited by time. What I am seeing here in Cali is that 3" dps consistently make less tq than the 2.75" on pump gas, and apparently do not have any gains on the 2.75" top end wise either.

The Perrin 3" ACD DP has perfect fitment and is affordably priced, so its not as if we can't get any 3" dps for our customers and sell 2.75" dps as a default.

We recommend the Tanabe 2.75" because here in Cali, we do not drag race, and transient response / low end tq is more suitable for the type of driving our customers do.

 

EFIxMR, I'd like to see the results of the 3" vs 2.75" so keep us posted.

Works stuff is nice but the prices are outrageous...what justifies the price?....are their parts that much better (besides the thermal coating which can be done to any piece)? I just don't understand why their downpipe is priced $100-200 more than most other DPs???

 

ya good question lol