auto increase of boost due to exhaust?

[akeenan]

ok, ive read about the automatic increase with boost when you change your exhaust from the standard one.

If someone has changed their standard exhaust from the cat back i would assume boost would slightly change.

would the boost change much again by replacing dump/front pipes?

[Gester]

yeah mine went to 9 psi? Dunno why, but it was obviously better

[akeenan]

after cat back or full exhaust?

[Ronin 09]

hey akeenan, welcome back

after putting my full system on i'm running 10.5 max boost

btw, that trust exhaust of mine was measured at 105dB @ 3300RPM!

[akeenan]

hey! ronin thanks dude!

105db eh! hahahaha

so u think once i install my dump /front which will make it a complete exhaust i should notice power differences? or just more mid range power?

[Ronin 09]

definetly notice more midrange. when i got my exhaust done, the cat back arrived first, then about 3 weeks later the front pipe and the dump - you'll notice the difference. You will lose a bit of low end (barely noticeable), but the responsiveness and top end breathing is much better.

And of course only for off street use, decat it and throw flames!

[akeenan]

cool thanks!, thats the excat answer i was looking for!

peace

oh i guess you dont have your trust system anymore of do you?

[Ronin 09]

oh but i do pulled over twice so far, no signs of defect / EPA... 'random' checks

BUT it is only a matter of time. Thank goodness my mate works at an exhaust shop that just happens to be an EPA test centre...

[akeenan]

lucky! heha , you may be one of the lucky ones that gets away with it. im changing my muffler shortly. im tired of the 81dbs

[rb26dett]

the boost increases due to the drop in the back pressure. read this from somewhere a few years ago, something bout physics and air wanting to flow from a high pressure area to a low pressure area.

therefore, when u lower ur back pressure, more air wants to go from the compressed, high pressure area, to the low pressure area, and thus ur boost rises automatically.

[rb25]

i went from 7.0psi to 8.5psi with a full exhaust

[Guest RedLineGTR]

get a boost gauge and check..most preformance is gained in the high end of the rpm range..when ya put ya foot down.

[benm]

I gained better midrange response and 10rwkw across the board when upgrading my standard front pipe to a 3" frontpipe + 3" cat.

[akeenan]

*excellent* cheers!

[ken]

So, if your boost increase more after install a full exhaust, the more free flow your exhaust is?

[rb25]

for sure ken - it's the first mod of many many many (dreaming of mods) mods you should do!

[CR34TION]

Ronin.. you must help those of us out that get busted..hahaha

I have a cat back system, but running a silencer which keeps it nice and quiet. I know i'm not making the most out of the system, but would this still flow better than stock?

Cheers,

[Cubes]

I picked up 15rwkw with a full exhaust.

I noticed it felt like it had more balls when boost was developing.

[Ronin 09]

CR34TION, if you get done, just PM me and we'll see what we can do