opening up exhaust
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will this bring me many performance gains?....ive posted earlier, im going with a si/do mello tone muffler into 2.25 pipe in to 3.5in. tips.....is this considered opening up the exhaust?...and is this gonna give me some gains?....my second cat is hallowed out
Fleet Owner
Joined: Sep 2005
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From: Lake Tahoe, Nevada
Originally Posted by Josh0525
will this bring me many performance gains?....ive posted earlier, im going with a si/do mello tone muffler into 2.25 pipe in to 3.5in. tips.....is this considered opening up the exhaust?...and is this gonna give me some gains?....my second cat is hallowed out
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its EFI, and how would i go about getting a bigger intake system?...or is there anyway to do this myself ect.??
thanks guys
thanks guys
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About the only thing you can do to modify the efi intake manifold, short of fabricating your own intake, would be install a 302/351w throttle body, to gain full benefit, you have to port match the intake where the throttle body meets the intake. You could install a 460 throttle body but I'd say thats well past overdoing it.
I was gonna say, headers are usually considered, "opening up" the exhaust, along with the rest of the exhaust system but the stock efi exhaust manifolds are ok for stock to mild applications.
I was gonna say, headers are usually considered, "opening up" the exhaust, along with the rest of the exhaust system but the stock efi exhaust manifolds are ok for stock to mild applications.
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Fleet Owner
Joined: Sep 2005
Posts: 28,609
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From: Lake Tahoe, Nevada
bigger intake
Originally Posted by Josh0525
its EFI, and how would i go about getting a bigger intake system?...or is there anyway to do this myself ect.??
thanks guys
thanks guys
Also a more free flowing air intake to the throttle body.
Perhaps someone else out there knows of a hi-performance throttle body???
Other than that, you start talking about blueprinting. CC the head, polish and match up all the intake and exhaust ports. The list never ends.
Laughing Gas
Joined: Jan 2005
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From: Magnolia, TX
I don't believe that Josh has indicated whether he want these mods to be in harmony with the PCM, or does he want to mess with getting a chip or a programmer?
That question needs to be answered first, IMO.
Some, even simple, mods will casue the PCM to throw codes all day long.....
CMOS
That question needs to be answered first, IMO.
Some, even simple, mods will casue the PCM to throw codes all day long.....
CMOS
Posting Guru
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Actually nothing mentioned thus far, should throw a code on his speed density engine. Speed density is sensitive to vacuum levels.
A "high performance throttle body" would be the 302/351w stock throttle body, as its larger than the 4.9's, next step would be the 460 throttle body.
A "high performance throttle body" would be the 302/351w stock throttle body, as its larger than the 4.9's, next step would be the 460 throttle body.
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lol...all this crap sound too complicating and expensive, i dont want a hot rod or anything so i guess ill just put my exhaust on to get my more aggressive sound and be happy with that...thanks guys for the input
Fleet Owner
Joined: Sep 2005
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From: Lake Tahoe, Nevada
Originally Posted by Josh0525
lol...all this crap sound too complicating and expensive, i dont want a hot rod or anything so i guess ill just put my exhaust on to get my more aggressive sound and be happy with that...thanks guys for the input
As the old saying goes, 'speed costs money, how fast do you want to go?'
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