? about performance loss, bullets vs anything else

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Oct 21, 2010 | 09:33 PM

krissoto

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From: Bonne Terre, MO

? about performance loss, bullets vs anything else

So it was brought to my attention today that my true dual set up might be hurting the performance of my car. Apparently a friend of a friend had a Y pipe on his car with a one chamber dumped and switched to an X pipe true dual set up with bullets. Well they dyno'd the car and he apparently lost 30-40 hp and then at the track he ran .4 tenths slower. I personally don't believe it but I am just wondering what others have experienced or if anyone has heard of this? Was apparently due to back pressure from the baffles? Any imput would be great.

Oct 21, 2010 | 10:44 PM

garygnu

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what cam was he using?

Oct 21, 2010 | 11:09 PM

gocartone

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From: Eau Claire-ish, WI

I could maybe see there being a slight difference between the two, not sure in favor of which but they would be close either way. 30-40hp LOL, only if he was running 1 3/4" pipes on the true duals.

Oct 22, 2010 | 01:12 AM

01ssreda4

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From: Turnin' Wrenches Infractions: 005

What kind of bullets? Fiberglass packed like dynomax or chambered like sweet thunders?

Oct 22, 2010 | 08:29 AM

krissoto

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From: Bonne Terre, MO

I was told they were dynomax bullets. Its kinda hard for me to believe also. Some friends are telling me to switch to 1 chambers to help increase performance because of the 1 baffle in the flomaster. I love the way my car sounds.

Oct 22, 2010 | 09:36 AM

01ssreda4

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From: Turnin' Wrenches Infractions: 005

Dynomax bullets flow straight through like an open pipe. There is zero restriction.

Oct 22, 2010 | 10:08 AM

Element

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From: WV

Sounds like your friend's friend is full of ****.

ANY backpressure is a bad thing. A setup with less backpressure isn't going to cause a loss of power. End of story.