A few questions

For the RWD SR20DET cars! Sponsored by Wiring Specialties.
Doomed2Walk
Posts: 1083
Joined: Sat Jun 21, 2003 7:39 pm
Car: 2005 Subaru Impreza WRX STi WRBP on gold
Contact:

Post

Anyone know where I can get a hotpipe for the S14 w/ a Blitz old school SS BOV? Will the DD hot pipes work? I want to eventually move the BOV from the cold side to the hot side.Also, if I get a bolt-on SS exhaust manifold, what are the benefits from this? Will there be a power increase, and are there any downsides to this (other than cost)? As cool as top-mounts are, there aren't any benefits are there? From what I've read, bottom-mounts are more cost effective, and keep a lower center of gravity with keeping the turbo lower, although I probably won't be doing any intensive motorsports where COG is really important.I would also like to upgrade the top end eventually, is it cheaper to get the S15 480 injectors or Nismo 550 injectors? Keep in mind I don't really want to touch internals, nor pay for a bigger turbo because I want my car to be a daily driver/weekend track car, so 250WHP is my goal and anything above that is just a benefit. How much boost/power will the S15 injectors support before they start to lean out? Will I need to get a new fpr and fuel rail? I know I'll need a way to manage the fuel, what are some good and cheap ways to do this? I was thinking SAFC, but anyone got any other good/relatively cheap ones? Anything else I should modify for daily driving use to maintain reliability? I'm going to upgrade the KA radiator to a Koyo and get electric fans, any recommendation for the fans? Is an oil cooler just overkill or is it something that will be beneficial for its cost? Sorry for asking so many questions, but I'm still trying to learn. So thanks guys.


180fan
Posts: 7799
Joined: Sat Dec 14, 2002 12:16 pm
Car: 89 fastback

Post

1. you try the B/S/T board yet? Either there or ebay would be my best guess.2. the exhaust manifold can add power from what I hear. bigger pipes can dump more exhaust gas, equal length runners mean the turbo gets exhaust gases in regular intervals and that's supposed to help with spooling. So yeah I think it'd be a worth while investment.3. top mount manifolds, I think they're easier to service the turbo. You try pulling a turbo from a bottom mount yet? man it's a PITA. 4. 480 or 550 eh...that's your choice. If you're on a budget get the 480's as they'll carry you through the 300hp barrier. If you want something that'll probably last you longer in terms of power buildups, the 550's would be a safer buy.5. I've heard they can run almost 1 bar. I wouldn't push them past 1 bar. At 1 bar and 480cc injectors, you won't need to get a new fuel rail or fpr if you keep the injectors side feed. 6. The S-AFC is a cheap method of managing your fuel system. I just sold my S-AFC II for 230. 7. Daily driven, I'd stick with the mechanical fan. Just more reliable in my view. I mean hell, Koguchi uses mechanical fans and prefers them over electrics (from an interview I read a while back). Good enough for Koguchi, more than enough for me (unless I do something really stupid lol).8. oil coolers are good investments, but they add up in cost real quick. From the oil cooler, fittings, relocation adapters, the hoses, etc. Just make sure you get one with a thermo in it. Cold oil can be bad news too.

Doomed2Walk
Posts: 1083
Joined: Sat Jun 21, 2003 7:39 pm
Car: 2005 Subaru Impreza WRX STi WRBP on gold
Contact:

Post

Thanks, yeah, but with top mounts don't you need a custom dp since the turbo sits higher up? Since cost is a big deal, I will most likely not be going beyond the 300WHP barrier, I figure it's easier and cheaper to remove weight if I wanted my car to be faster.


Return to “SR20DET Forum (rear-drive)”