ive searched for what people have as their exhaust and it seems liek custom piping.. etc etc. nothing really special, for example no one is like. *This* is the best exhaust for a turbo application. the brullen.. is REALLY expensive. maybe ill save for that later.
but my main question is if i have a cat on while im turbo'ed will it have major effects on the cars performance?
and if i install a test pipe.. where do poeple get them?
u can have a shop make a test pipe for u.. just get flages that match n it bolt right uup... but with DP& N1 i dont think u SHOULD run test pipe... cuz is gonna be WAY to LOUD...wat ever sz pipping ur DP is get a high flow cat n go with that... on ebay highflow cats goes for lik $60-80 buxx...
That is extremely small for a turbo car, 3" is pretty much the rule of thumb for turbocharged setups (if you plan on running big boost eventually). If you're goin to run a test pipe just run a straight pipe from your dp and throw a flange in half way or so for easy removal (if its necessary some time). You can buy mandrel bends from jcwhitney.com to help with your exhaust or if you really want to buy something somewhat pre-made for you www.kteller.com sells SS piping kits for 4th gen in pretty much whatever diameter you desire. IF you keep with the 2 1/4 exhaust you're just choking your car, may as well still be N/A, lol.
Originally posted by Initial Lude ive searched for what people have as their exhaust and it seems liek custom piping.. etc etc. nothing really special, for example no one is like. *This* is the best exhaust for a turbo application. the brullen.. is REALLY expensive. maybe ill save for that later.
The reason there is no specific exhaust that is recommended is because most exhausts created for our cars are for N/A applications, meaning about 2.25" in diameter piping. That is too small, even for supercharged applications.
Entry-level boost should be at a minimum 2.5" exhaust piping, including header/downpipe/whatever. And like mentioned before, if you plan on running bigger boost (I would say maybe 10 psi+) you will need a 3" exhaust system.
If you go turbo and limit yourself to a 2"/2.25" exhaust, you will cause yourself problems.
__________________ Medium Scott - XBox GT: derech0 - 2005 PPW Track Model: 58k Miles
no problems...just that your exhaust will be a bottleneck, reducing your power
just get a custom 3" exhaust made with a high flow cat(if youre worried about visual inspection) or a test pipe
that way in the future when you want to boost more, you dont have to spend more $$$ to get that made
__________________
-Anthony- PSN/Xbox Live GT: Evoking1230
2005 EVO VIII-SOLD/R.I.P.
2000 Honda Prelude SH - Gone But Not Forgotten
Originally posted by MugenPoweredLude no problems...just that your exhaust will be a bottleneck, reducing your power
Yes, it would be a bottleneck. And as a result of being a bottleneck, wouldn't that cause extra boost pressure to reside in your cylinders causing detonation because you couldn't get it all out of the exhaust?
I would imagine you could get away with 2.25" piping on a turbo but only if you were running like 7 PSI of boost or less.
Maybe I'm wrong, and if so, someone correct me.
__________________ Medium Scott - XBox GT: derech0 - 2005 PPW Track Model: 58k Miles
Yes, it would be a bottleneck. And as a result of being a bottleneck, wouldn't that cause extra boost pressure to reside in your cylinders causing detonation because you couldn't get it all out of the exhaust?
I would imagine you could get away with 2.25" piping on a turbo but only if you were running like 7 PSI of boost or less.
Maybe I'm wrong, and if so, someone correct me.
im not too sure about that, I think its just a big bottleneck
now if the element in your cat breaks and clogs the exhaust** then yea you have a problem
__________________
-Anthony- PSN/Xbox Live GT: Evoking1230
2005 EVO VIII-SOLD/R.I.P.
2000 Honda Prelude SH - Gone But Not Forgotten
Yes, it would be a bottleneck. And as a result of being a bottleneck, wouldn't that cause extra boost pressure to reside in your cylinders causing detonation because you couldn't get it all out of the exhaust?
I would imagine you could get away with 2.25" piping on a turbo but only if you were running like 7 PSI of boost or less.
Maybe I'm wrong, and if so, someone correct me.
Sorry, you're wrong, it would cause the turbo not to build boost very well (if at all). Recently my friend tried hooking his stock exhaust on his civic up to his downpipe and could only get .1 bar out of the car. So that kind of gives you an idea of how this would work.
Check locally someone to fab all that up for you. For instance theres a Place called AR fab who makes custom piping locally here in Va, and you have a 3inch exhaust with a 2.5 inch downpipe flaring out to 3inchs with a 3 inch down pipe made, for prolly as much as brullen is asking for their exhaust.
Originally posted by Initial Lude what is the limit of the DP size?
and if i run a dp(2.25in) + testpipe(2.25in) + n1(2.25in)
will that detonation occur as silverbullit states, becuz of my piping too small?
I'm not exactly sure how detonation would come into play. It seems to me that if the exhaust was a hinderance, the turbo would not output as much boost.
Your proposed exhaust should work well. It won't make as much power as a larger exhaust, but should do fine for a daily driven setup.
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* then yea you have a problem
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