Does a down pipe make that much of a difference?

jackal5555 · Jul 15, 2009, 11:55 AM

I am going to buy a cobb and a cpe cbe and quick pipe w hfc. My question is does the down pipe make that big of a difference to justify me buying it. I know for the stage 2 tune on the cobb it says you need a cbe, but I'm already dropping $1600, do I need to drop an additional $200?

I already have an ams intake.

Another question, how close to the +24% can I expect to actually see?

**atombomb33** · Jul 15, 2009, 11:59 AM

Search, please

This has already been discussed and there are dyno results to support the findings.

**Clark_Kent** · Jul 15, 2009, 11:59 AM

Good question, although it will probably never be answered. It depends on who you ask. Some tuners have claimed very little to even zero gains with the addition of a downpipe; whereas others have claimed sizeable power increases.

SmoothTT07 · Jul 15, 2009, 12:00 PM

A standard downpipe wont net you the same gains as a down pipe with 02 housing. But when it comes down to justifying a purchase, it all comes down to you.

cornercarver · Jul 15, 2009, 12:01 PM

Yes. You might as well anyways since most of your exhaust will be taken apart. In the scheme of things, $200 is nothing....

I wouldn't go by the percentage gains businesses claim on their sites. Do a search to see what gains are made by each mod.

jackal5555 · Jul 15, 2009, 12:09 PM

Quote:

Originally Posted by adambl03

Search, please

This has already been discussed and there are dyno results to support the findings.

i tried, but the search function on here drives me nuts.

orthojoe · Jul 15, 2009, 12:49 PM

This is a good question. I was originally thinking TBE, but after reading all the horror stories about installing the o2 housing, I began to think about just doing hiflow cat and CBE. Plus some guys like Buschur are saying the o2 housing doesnt need to be upgraded. If you don't do a true TBE and do just the cat and CBE, can you move to cobb AP stage 2, or do you stay with stage 1?

DarwinX · Jul 15, 2009, 04:12 PM

Quote:

Originally Posted by orthojoe

If you don't do a true TBE and do just the cat and CBE, can you move to cobb AP stage 2, or do you stay with stage 1?

Yes you can download the Stage 2 Cobb tune (93 or 91 octane)) with just the high-flow cat or test pipe, and a CBE.

Remember to remove the pill as well (instruction in the Cobb Stage 2 map notes).

http://www.accessecu.com/accessport/.../EVOXMaps.html

JerseyEvox · Aug 5, 2009, 04:15 PM

hey, question, just ordered the greddy spectrum elite exhaust, so i need a high flow cat or test pipe to run cobb stage 2? also, is it safe to run stage 1 with the greddy se exhaust?

Codevo · Aug 5, 2009, 07:45 PM

Quote:

Originally Posted by JerseyEvox

hey, question, just ordered the greddy spectrum elite exhaust, so i need a high flow cat or test pipe to run cobb stage 2? also, is it safe to run stage 1 with the greddy se exhaust?

No you do not need a test pipe/cat for the AP stage 2 map, but it won't hurt you either. Yes it is safe to run stage 1 with any CBE.