Well I can't find too much on this comparison so I'll ask it here. I'm looking for some direction between the Perrin single piece dp for the 09 WRX compared to the COBB DP.
What I'm going off of so far.
Perrin DP
Pros: Sold as part of the stage II light kit for $1000 with the AccessPort
Reputable company
Cons: Completely tube steel. Could cause higher in-cabin noise.
No bung welded in- would have to have one put in for extra cost if it's even possible with the design (depends on wall thickness of the steel used)
COBB DP
Pros: Thick cast bellmouth with bung welded in. Make it easy to put in the AFR gauge later. Can also reduce in-cabin noise coming off the turbo.
Also a quality company.
Already have the COBB CBE so I know it will fit nicely.
Cons:
Cost- 595 by itself and then I would have to buy the Accessport for another 695. I would be spending 1300 for the two compared to 1100 max if I get the Perrin and a welded in bung later.
Right now I'm honestly leaning towards the COBB piece because of the bung already in place and the fact that I love COBB and the bellmouth design seems to be a bit better.
I have the Cobb DP and I assure you that it is a real high quality piece. However, I think your decision should depend upon if/when you are going to get an Accessport. If you are going to be buying an Accessport at a later time then you probably won't even notice the extra $200 missing from your wallet. If you're going to be getting the Accessport soon then it would probably be best to just save some money now.
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Mass Pike Warrior in a WRB WRX
-Mike
I don't know about the Cobb DP, but I assure you that both the 2 piece 2 cat Perrin and also the one piece single cat Perrin DP's have the O2 sensor bung welded in. I bought the one piece Perrin DP and it's excellent. I don't get any extra cabin noise at all, but I can hear my turbo quite a bit more One other thing is I'd recommend the Grimmspeed gasket(s) for this. Good price and top notch quality with a perfect fit OEM style for less cost. I've only heard good things about the Cobb stuff as well though. I just prefer the divorced wastegate design from Perrin.
Oh, my bad. Well you got me there. Just didn't specify and I know there are some DP's that need the O2 sensor bung welded in as well (not so many for newer models though). Considering you have the Cobb CBE already and plan on going to them for a tune, perhaps you can talk them down a bit on the AP if you get their DP as well. Never hurts to ask =D
While I have a thread open... FMIC vs TMIC.... I'm torn at this point. I know the TMIC will be better with the stock turbo, however down the line I do see a pretty big buildup of the car making an FMIC the better route. Anybody running an FMIC with the VF52 and have anything to say about it? Likewise I know some of you guys are running larger TMIC's on 20g's and what not but anybody have experience with say the Perrin TMIC on the VF52? I'm looking for pros/cons (obviously the cost is a pretty big difference).
While I have a thread open... FMIC vs TMIC.... I'm torn at this point. I know the TMIC will be better with the stock turbo, however down the line I do see a pretty big buildup of the car making an FMIC the better route. Anybody running an FMIC with the VF52 and have anything to say about it? Likewise I know some of you guys are running larger TMIC's on 20g's and what not but anybody have experience with say the Perrin TMIC on the VF52? I'm looking for pros/cons (obviously the cost is a pretty big difference).
How big do you think you will go? I know Boost Addict will be running the TurboXS FMIC eventually on his car, but idk if it will be with the 52 or the new turbo he is getting also.
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Joshua
"2007 WRX-20G- Tim Bailey tuned 326 HP 319 ft/lbs
Stage 2 2005 WRX
Cobbtuning.com"
Probably a GT30/35R sized turbo to push 450-500 awhp.... Essentially the smallest turbo to push that much power. This is going to be a few years down the road though as I won't be doing that extreme of a build while this is my DD. I know boost was about to do that mod, so I'll def. look at his thread to see how the 52 does on it, that is if he keeps it on for the FMIC upgrade. Only thing I worry about is any lag associated with the piping... I would guess the Perrin FMIC and TMIC aren't too much different in core size so the main difference would be in the piping.
I see where you are going then. You dont want to have to buy another part later down the road. When I was talking to a tuner (Mat at BenchMark Tuning) he said its not really lag you feel with the FMIC, but the throttle response (just something to think about). Im not sure that you would be able to hit your mark though with a TMIC, it would definetly be pushing it. Im sure some others will chime in and help you out also.
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Joshua
"2007 WRX-20G- Tim Bailey tuned 326 HP 319 ft/lbs
Stage 2 2005 WRX
Cobbtuning.com"
Oh I'm positive I wouldn't hit that with a TMIC, but just to keep the response around while I'm using it as my DD for the next 3-4 years, the thought of buying a larger TMIC came into mind. Then later down the road I would slap the bigger FMIC on when I need it. If it's not going to cause too many drive ability issues, then I'll just put the FMIC on now and save the 800 or so dollars I would probably throw into the TMIC minus what I sell it for down the road and just invest 1200 up front for a Perrin FMIC.
I'd give you some rep but I can't... I have yet to give some to somebody else.
Here is what I believe I've decided on for my next parts come springtime:
COBB Downpipe
COBB AP
Custom Dyno Tune at COBBs facility in Salt Lake (probably go with a high boost and low boost map if possible)
Prosport wideband AFR (can't decide over the digital or standard face)
Perrin Limited FMIC (red piping, stealth core)
That should all run me about $3300-3500. I guess I'll keep the car fund growing... I'm 1/3 of the way there as of right now.
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One other thing is I'd recommend the Grimmspeed gasket(s) for this. Good price and top notch quality with a perfect fit OEM style for less cost. I've only heard good things about the Cobb stuff as well though. I just prefer the divorced wastegate design from Perrin.
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