anyone running a 4" downpipe "109"

[BLACKHAWK]

anyone running a 4" dp? please post combo and et
is there any advantages over a 3.5 dp?
can someone post photos of 4"dp mounted?
any photos of dp and exhaust used will be great also
---dont care in reference to tsm rules-----

THANKS GUYS

 

[Hot Air]

A 3.5" DP has cross-sectional area of 9.6 sq inches. 4" has 12.6 sq inches. 4" has 30% more area so back pressure will be down substantially. Probably wouldn't do much for stock heads, cam, turbo. Modified engines....who knows!!!

 

[johnplogii]

Hopefully after 9 years he's not still waiting for an answer!

 

[Chris McDade]

Better late than never..... Lol


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[rodruckus]

If you know someone that can mandrel bend it in T304 stainless and make it fit, I'll buy one

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[2toneNV]

In case he is still wondering