What size Exhaust tubing are you Turbo Vr6 Guys using??

1053 Views 15 Replies 13 Participants Last post by Gerapudo, Feb 11, 2002

keith_r

Discussion Starter · Feb 8, 2002

Just wondered if there is a trend here on Turbocharged Vr6 engines..
I know all the usual stuff of turbos like minimal back pressure etc...
Say for 300hp...
2.5 " ?? 3" ?? 2.25"??
I know that you really want to Tune the size toi cater for HP output.
How much of a difference has anybody noticed swapping between sizes???

[Modified by keith_r, 9:19 PM 2-8-2002]

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Gerapudo

· #2 · Feb 8, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (keith_r)

3" for max breathing

asylum

· #3 · Feb 8, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (Gerapudo)

quote:[HR][/HR]3" for max breathing[HR][/HR]

Me too! http://****************.com/smile/emthup.gif

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VR6'n

· #4 · Feb 8, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (asylum)

i would go with 3" http://****************.com/smile/emthup.gif

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CALVR6

· #5 · Feb 8, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (keith_r)

3" is ideal but 2.5" will work too. If I had the cash at the time, I would have gone 3" .

sergevr6

· #6 · Feb 9, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (CALVR6)

3" for me as well as soon as i order it.

JTestman

· #7 · Feb 9, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (keith_r)

3"

germanrox

· #8 · Feb 9, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (JTestman)

I've heard the 3" setup that Matrix makes, and it's so sweet. 3" from the downpipe, through the high-flow cat, and then 3" the rest of the way back, it sounds awesome.

bigpoppavr6

· #9 · Feb 9, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (germanrox)

3" allllll the way back, including the cat...

Here's what 3" piping looks like next to the Brospeed exhaust, which is a 2.25" system.

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24v

· #10 · Feb 9, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (bigpoppavr6)

3" for sure
i have 3" from the downpipe back
all magnaflow http://****************.com/smile/emthup.gif
now i just need that damn 3" downpipe

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psi glx

· #11 · Feb 9, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (Boost Inside)

we just finished my bending my exhaust piping. i got 3" from turbo back including the downpipe, except i am still running a 2.5" rear muffler
- i liked the sound and can't find a humble sounding 3" rear muffler system without installing a midpipe, which i don't want either...

Dreamstate

· #12 · Feb 9, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (psi glx)

3" from the turbo to the fire spitting tailpipe

keith_r2

· #13 · Feb 11, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (keith_r)

3" seems a bit big to me for 300Hp.
2.5" i thought would be the trend.
I have looked at the real reason for sizing the Exhuast tubing, and this comes back to Air speed, 3" is enougth for up to recomended Exhaust Airspeeds for 500+Hp

Thanks Though Guys...
Keith

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Gerapudo

· #14 · Feb 11, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (keith_r2)

quote:[HR][/HR]3" seems a bit big to me for 300Hp.
2.5" i thought would be the trend.
I have looked at the real reason for sizing the Exhuast tubing, and this comes back to Air speed, 3" is enougth for up to recomended Exhaust Airspeeds for 500+Hp

Thanks Though Guys...
Keith

[HR][/HR]

Post count to inteligents ratio please

j/k have fun on the site!

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keith_r

Discussion Starter · #15 · Feb 11, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (Gerapudo)

What??

Gerapudo

· #16 · Feb 11, 2002

Re: What size Exhaust tubing are you Turbo Vr6 Guys using?? (keith_r)

Just do yourself a favor and get a 3" exhaust and trust everyone here. Turbos don't like back pressure!!! The quicker that exhaust leaves the better off you are! Now this is not the case in N/A cars. With the turbo you are creating enough backpressure from just the turbo alone.

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