stage 2 questions

just recently bought a perrin tmic and going to be buying either a cobb up pipe or perrin. any opinions on which one? i have a cobb ap and going to put that in after the tmic and up pipe

Pretty certain you need a DP to be stage 2. Also for what its worth i've got an invidia UP and it didn't line up with the exhaust manifolds very well. If I were to do it again I'd get the grimmspeed UP,because flex section.

You definitely need a downpipe and you definitely don't need a TMIC.

 

For the UP I think that those high priced options were nice when they first came out but there are now copies that work just as well (it's only a piece of metal after all), or you can get an STI uppipe. I got mine for $40.

Nothing wrong with upgrading the TMIC if he has the budget. I split the end tanks a bit at Stage 1 power. BMB hooked me up with a mighty nice "Bullet Proof" kit until I got the Process West in place. At minimum I'd do the BP mod, but like I said initially - if you have the budget a TMIC is peace of mind. I got tired of using vice grips to cinch mine up at Stage 2.

oh and you definitely need a downpipe for stage 2 (it pretty much defines that stage in the Subaru world).

Could of bought a DP and UP for the price of the perrin tmic but you still need a Dp.

 

I bought a invidia up and dp

 

Don't forget the gaskets

Could of bought a DP and UP for the price of the perrin tmic but you still need a Dp.

 

I bought a invidia up and dp

 

Don't forget the gaskets

 

i doubt that i only paid $550

^i only paid 280 shipped for my invidia DP.

Found them here on the classifieds, brand new $200 shipped for Invidia Down pipe and $150 shipped for the Up pipe, gaskets to, so about $400.

You cannot run stage II without a DP. Well I guess yo can, but you will have so much turbo lag it is a waste of time.

 

My best guess is that you will have major compressor surge problems, since, with the larger IC, and a better flowing UP, you will have all sorts of pressure on the intake side of of the turbo, with a restriction on the exhaust side.

 

This is a full page add for compressor cavitation , IE, surge:eek:

 

If you don't want to spend the money, just gut the DP.

Found them here on the classifieds, brand new $200 shipped for Invidia Down pipe and $150 shipped for the Up pipe, gaskets to, so about $400.

 

dont want to run invidia as someone stated earlier it didnt fit up very well. and i dont mind saving up for an extra month or two you buy quality parts thats why i was asking about cobb or perrin

You cannot run stage II without a DP. Well I guess yo can, but you will have so much turbo lag it is a waste of time.

 

My best guess is that you will have major compressor surge problems, since, with the larger IC, and a better flowing UP, you will have all sorts of pressure on the intake side of of the turbo, with a restriction on the exhaust side.

 

This is a full page add for compressor cavitation , IE, surge:eek:

 

If you don't want to spend the money, just gut the DP.

 

ill start looking around for a dp then, i never even thought about that thank you.

Invidia makes high quality downpipes. I also bought a Grimmspeed up pipe which look to be about the best around, plus they are local to me. I have yet to install either. Cobb and Perrin are also very respected brands here.

 

This thread is a pretty good read, if you haven't seen it yet. I know you didn't mention anything about upgrading turbos, but there is some good information about what parts to upgrade and when. You are going in to "Scenario 1" territory.

 

http://legacygt.com/forums/showthread.php/turboi-wiki-twist-178684.html

 

I'd also sell the AP and just get an etune or a local tune specific for your setup. I'm sure there's a ton of quality subie tuners in CA.

Both my Invidia pipes fit with no issues

I have Invidia UP and DP on an auto. No issues. The UP has a flex section. Adding an intercooler has been referred to as "Stage 2+" when you have the DP in place.

Someone saw an invidia dwg downpipe for $200?? Where????? Pm me please :-)

I have Invidia UP and DP on an auto. No issues. The UP has a flex section. Adding an intercooler has been referred to as "Stage 2+" when you have the DP in place.

 

If you go to stage II, sooner or later you will blow the tabs on the stock IC. A great Stage II set up is UP, DP and a good aftermarket IC.

 

A "fart can" adds minimal Hp (maybe 5 HP) and just attracts the boys in the blue

 

Just don't forget the suspension bits.

Will the OTS Stage II tune cover the aftermarket IC? I would think the OP would also need a custom tune with the proposed set up.

If you go to stage II, sooner or later you will blow the tabs on the stock IC. A great Stage II set up is UP, DP and a good aftermarket IC.

 

A "fart can" adds minimal Hp (maybe 5 HP) and just attracts the boys in the blue

 

Just don't forget the suspension bits.

suggestions for downpipes?

Cnt,cheap and fits well.

Will the OTS Stage II tune cover the aftermarket IC? I would think the OP would also need a custom tune with the proposed set up.

 

The Cobb OTC Stage II tune works fine with the Perrin IC, and Cobb UP and DP.

 

I am sure that you could get more power with a custom tune, but my setup has been trouble free for 50K miles.

I think CNT makes the cheapest one you can buy thats reputable. I just bought one but the middle bracket did not line up, other than that I love it.