Test Pipe with stock exhaust.

[KareemA4]

Anyone pimping the test pipe with your stock exhaust?
If so, how does it sound?
Any gains?
Because I'm thinking of getting a test pipe, until I can order the magnaflow exhaust

[KareemA4]

no one?

[aaaudiprotein]

http://www.audizine.com/forum/showth...+stock+exhaust

[d_maniac]

in short i did that on my last a4 and you feel the difference and alittle more noise but you do notice alittle rattle from the mid mufflers

[DeanUW]

Are u stock or stageIII or what? I ran my stage III w/ a stock exhaust w/ a TP in for a long time and it felt great, added a little growl. I've put a test pipe on a customers car who was stage I and he too had a stock exhaust. It definitely changes the tone and you will notice it's slight gains. Get one

[Papachristou]

I would do it... You will gain a little spool for sure and if nothing else your EGTs will g down and the car will cool down much quicker because the cat isn't holding all that heat in... My turbo and Mani used to glow bright red when I was stock now I'm running double the boost and it just gets a little red

[KareemA4]

Im about to pull the triger on the VMR Test Pipe for the stock exhaust.
Any objections?

[VMRSport]

You'll get gains. Of course, it'll be more noticable with a complete exhaust set up. However, at the same time, it's like, of course you'll also notice it if you got an intake as well, bored out valves, etc, etc. It just all adds up.

-Don

[eurogruppe]

Objection!!! haha

i'd rather go 3" than 2.5"

[KareemA4]

lol
im just woried about the sound
i dont care about loudness, im worried about ricerness
it prob wont be but just checking.

[eurogruppe]

well the sound differences between the 2.5" and the 3" wont be much different, its more of a performance aspect. And don't worry about the "rice", the nice thing about a turbo is that it eliminates the ricey sound, or at least quiets it down a good amount.

[Killerteve]

In the case of a 3" on a stock turbo it will definitely give less performance than the 2.5, since the K03 on the stock mani doesn't flow that much and it's too little back pressure and may hurt spool. I would go 3" unless bt or higher. I will still be using a 2.5" on my bt setup since 2.5" is good for almost 400hp of flow.

[absolutegtr]

I have this setup...its sucks, lol

When you let of the gas after putting the engine under load, there is a nice, annoying rattle/rasp

[eurogruppe]

In the case of a 3" on a stock turbo it will definitely give less performance than the 2.5, since the K03 on the stock mani doesn't flow that much and it's too little back pressure and may hurt spool. I would go 3" unless bt or higher. I will still be using a 2.5" on my bt setup since 2.5" is good for almost 400hp of flow.

So you would still reccomend a 2.5" TP over a 3" with a Stage 1+ tune and APR TIP?

Can you confirm that the 3" gives less performance than the 2.5" on a K03?

[gotboost]

I did, got the one from VMR too. Quicker sool, and a louder spool and also at idle it sound louder.

[KareemA4]

alright, i guess the verdict is yes
ill call my friends shop and tell him to order one for me.(i dont have paypal, or a credit card for that matter) lol

[eurogruppe]

So you would still reccomend a 2.5" TP over a 3" with a Stage 1+ tune and APR TIP?

Can you confirm that the 3" gives less performance than the 2.5" on a K03?

The 3" will give you better top end tho, which is all that really matters to me since thats where my car needs improvement

[Dopefish]

In the case of a 3" on a stock turbo it will definitely give less performance than the 2.5, since the K03 on the stock mani doesn't flow that much and it's too little back pressure and may hurt spool. I would go 3" unless bt or higher. I will still be using a 2.5" on my bt setup since 2.5" is good for almost 400hp of flow.

For someone with a turbo as their avatar, I'd expect you to know a little bit more about the air dynamics involved with them. Backpressure is not a factor, N/A, turbocharged or otherwise. Backpressure is always bad as it creates a negative restriction. Now Velocity, that is where it is at. A smaller pipe will have a higher air speed than a larger one, within reason. Too small and you WILL get backpressure that will hurt your spool time and high-end delivery. Too large and the exhaust system will not help pull the gases out via scavenging which you might notice prior to the tubo spooling up but not too likely. With a turbo car, this isn't much of a factor due to the high speed, the turbine wheel presenting a partial obstruction already and the increased heat which can increase air velocity if kept INSIDE the pipes (heatwrap, etc).

That said, with a K03/K04, you likely wont see an issue with the 2 1/2" or 3" unit. If you consider a GTRS or others in the BT breed; 3" is the definitive answer.

[A13ART]

i was in the market for a test pipe to and wanted to get a 3 inch due to the common thought that bigger the better but after reading all of this i decieded to go withthe evolutions racewerks tp cuz its a 3'' start and reduces to a 2 1/2 so u still get the best of both ends havnt installed it yet tho cuz i am planningto get it installed as i gret the rest of the exhust cuz i am worried about cross threding my bolts then i will be in worse shit so but look intothe

Evolution Racewerks test pipe i belive its like 180 or 200 but i got mine for whole sale

[LampyB]

^^try using a period at the end of a sentence. i can barely understand what you're saying.

[Trev]

Installing my VMR test pipe on my stock exhaust today.

Ill let you all now how it goes.

[traf818]

I had a test pipe and stock exhaust with my GTRS a long time ago and it kicked ass, but as soon as i stepped up to a neuspeed exhaust i noticed a nice gain in power.

[KareemA4]

cool!!
Exactly what I have been looking for!

And Trev I'm looking forward to hearing your comments about it.

[Trev]

All done!

Let me start off by saying, what a PITMFA!!!

Ok, don't let that scare you lol.

The bolts came out with little effort, the hard part was trying to get at them..... I used PB Blaster which worked amazing. It freed up the nuts and bolts really well. Just so you know im TIP, i think its easier for the 5spd guys.

As for performance i think i noticed a bit of a gain. I'm also not used to my car yet. I just installed a FMIC last weekend and got my car chipped with apr 1+ on Thursday.

For sound its hardly any louder, maybe a tiny bit in the higher rpm's. There is a little bit of a noticeable rasp (that's the only way i think i can enplane it) under load.

All and all im quite happy For the $100 i spent on the pipe its well worth it.

[agart]

For sound its hardly any louder, maybe a tiny bit in the higher rpm's. There is a little bit of a noticeable rasp (that's the only way i think i can enplane it) under load.

If you have any way of getting a sound clip of the car now I'd be very thankful.

[Trev]

I wouldn't.

Its not that noticeable. Maybe if i had professional sound taking equipment.

[KareemA4]

Thanks trev.

[dirtybrd]

When I installed mine, many moons ago. I had a 3'' on stock exh. Just a tad louder, nice little rumble at idle, and gained about 500rpms of useful power up top.