test pipe with muffler mod

[caRalliArt]

I'm wondering what power gains a stock ralliart would get with just the stock muffler mod and a test pipe.My goal is to gain throttle response/power without making my car loud.a little sound is understandable but I have little kids and I dnt want a loud exhaust plus a test pipe is cheap.I'm thinking that with the stock resinators and basically stock muffler ill gain power without making my car loud.plus it will save my cat for when smog comes up.what do u guys think?anyone run a test pipe and muffler mod? Any input about a stock exhaust with a test pipe?

[vplukas101]

i am also wondering i am going to do the same thing

[caRalliArt]

Are you palnning on buying a premade test pipe or having a custom one made?I plan to buy flanges and make my own.I think ill modify my muffler at the same time I just need to decide what I'm gonna cut the muffler open with.it would be nice if someone had a sound clip so iwe know what to expect before we start.

[Ralliart26]

Sooo if you were planning on doing the flapper mod I think I can help with some videos ;)
These are evo's... but its the same thing...

Stock exhaust!
http://www.youtube.com/watch?v=8JWWpGBH3Fc&feature=player_embedded

Flapper modded exhaust
http://www.youtube.com/watch?v=bZbWxrqMtrA&feature=player_embedded

Flapper modded exhaust with removed resonator.
http://www.youtube.com/watch?v=BQ4k6t3OtPg&feature=player_embedded

Enjoy!

[vplukas101]

my plans are flapper mod, res delet and test pipe form lancershop.com
150 bucks and thats that as for cutting im thinking a angle grinder idk any ideas?

[Ralliart26]

I'm no expert on cutting metal. But I don't see why any grinder will work? Maybe someone with more experience can chime in. I know when I cut before I've just grabbed whatever and went to town. I mean your welding it shut anyways and your cutting a big whole inside? Why does it matter?

[larmyca]

probly wont get much of a performance boost:(

[Ralliart26]

From what I've heard removing the flapper spools the turbo up a little faster. It's almost like putting on a after market exhaust... almost... haha. There are some evo's that have done it and went to the dyno before and after and have seen performance gains. Not a lot of power but for the money it is defiantly worth it.

[caRalliArt]

Well I have a cutting edge for my grinder so it should cut through pretty easy and the reason I'm going to use my grinder is because its easier to weld a clean cut shut than to fill in gaps from a jagged cut..thanks for the sound clips by the way.I'm not expecting to get a ton of power from this but I am expecting to improve my throttle response/boost lag.
Considering these mods are almost free,I don't think its possible for me to be disappointed.If I get anything from it it will be worth the work.plus I enjoy welding so any chance to weld is fine with me

[MikeW-RRE]

A 3" diameter thin cutoff wheel on a die grinder is what we use to open up the flap.

I was at 260-270 whp on a stock turbo and an HKS cat back. Took out the cat and lost 5 whp. Spent an hour on the dyno futzing with it and got the power back. End result was louder and stinkier. No power increase. It is a small little baby turbo that stock thing.

Mike W

[razorlab]

My personal RA is producing 165 whp over stock and still on the stock unmodded cat back. The nice thing is it's just as quiet as stock.

The current exhaust setup is 3" 02 downpipe ---> Mini Muffler Testpipe ---> Oem unmodded catback.

I would imagine with the stock pea shooter turbo the cat back is not really what is holding you back. ;)

[Krisko]

What's your complete mod list?

[razorlab]

What's your complete mod list?

CBRD FMIC
CBRD BBX Lite stock appearing turbo
Evo 10 OEM spark plugs (RA uses 7 heat range, Evo 10 uses 8)
Evo 10 Exhaust manifold
Specialty-Z 02-Downpipe combo
Ultimate racing test pipe with mini muffler
Stock catback and mid pipe
Injector Dynamic 1000cc injectors
Evo 10 Intercooler pipes
Evo 9 metal BOV
GM 3-port boost solenoid
AEM intake (3" MAF housing)
Tuned using EcuFlash and Tephra V1 map switch + knock light rom upgrade + PSI-target boost control

http://norcalmotorsports.org/users/bryan/mods/2010_RA_Sportback/RA_BBX_AEM_082010.jpg

http://norcalmotorsports.org/users/bryan/mods/2010_RA_Sportback/CBRD_BBX_LITE/me_SB_RA_E85vsTotallyStock_.jpg

[Krisko]

CBRD FMIC
CBRD BBX Lite stock appearing turbo
Evo 10 OEM spark plugs (RA uses 7 heat range, Evo 10 uses 8)
Evo 10 Exhaust manifold
Specialty-Z 02-Downpipe combo
Ultimate racing test pipe with mini muffler
Stock catback and mid pipe
Injector Dynamic 1000cc injectors
Evo 10 Intercooler pipes
Evo 9 metal BOV
GM 3-port boost solenoid
AEM intake (3" MAF housing)
Tuned using EcuFlash and Tephra V1 map switch + knock light rom upgrade + PSI-target boost control

http://norcalmotorsports.org/users/bryan/mods/2010_RA_Sportback/RA_BBX_AEM_082010.jpg

http://norcalmotorsports.org/users/bryan/mods/2010_RA_Sportback/CBRD_BBX_LITE/me_SB_RA_E85vsTotallyStock_.jpg

So is it safer to run a bbx lite over a bbx full to prevent overheating issues in your opinion?

[zeRep85]

It all depends what your ultimate goal is...

I drive mine all day ERRRRday....i want the most life out of my vehicle.

[Krisko]

Well bottom line I want to upgrade my car to its max capacity without having to upgrade the clutch. He's running 400whp no prob and I want to know how's his driveability is from track and daily driving

[zeRep85]

400whp? i thought he was at 360whp with E85.

Well you might not have to upgrade the clutch but you might have to replace them way sooner than normal...my .02.

bryan@gst; do you think I can run your setup with driving about 22K annually?

zeRep

[vplukas101]

well right know i got my resonator off and have a straight pipe with no muffler sounds nasty but the muffler mod will be done later tonight and it will sounds good:D

[elevatered]

are flowmaster (http://www.flowmasterdirect.com/) better than Billy boat