Getting the Power Bug again... what next?
12-03-2014, 09:25 PM
#1
Registered User
Thread Starter
iTrader: (5)
Join Date: Jul 2004
Location: San Jose, CA
Posts: 4,300
Car Info: http://kiva.org/invitedby/brett4254
Getting the Power Bug again... what next?
With my chassis and suspension finally in a good spot; I'm starting to get the itch to get more power out of my STI, but unsure where to go with it.
The current setup
2004 STI Stock internals in engine, 110K miles
Blouch 16G-XTR turbo Installed and custom tuned by GST
Underdrive pulley
Catted Bellmouth Downpipe
Airbox-silencer delete.
Electric Cutout on stock exhaust (makes no diff in power BTW)
Basic Goals:
This car gets driven daily, it has to stay streetable.
Must keep cats and be able to pass tailpipe emissions. No Front Mount I/C's
I autocross pretty often, throttle response and bottom end power are important (read: no massive turbos)
With it's limited availability, I don't think I'd be comfortable doing an E85 conversion.
Stuff I'm considering now and wondering if are worth it:
Full Header (equal length??)
EQ or Grimmspeed Exhaust crossover with stock manifolds
750cc Fuel Injectors
Maybe a Top Mount Intercooler, but assume this will cause more throttle lag
I know I'll probably discuss with Mike at GST too... but knowing how busy the guy is I hate bugging him.
I'm also considering putting the money into a new Limited Slip unit for the Rear to try and dial out more understeer...
Opinions/thoughts requested.
The current setup
2004 STI Stock internals in engine, 110K miles
Blouch 16G-XTR turbo Installed and custom tuned by GST
Underdrive pulley
Catted Bellmouth Downpipe
Airbox-silencer delete.
Electric Cutout on stock exhaust (makes no diff in power BTW)
Basic Goals:
This car gets driven daily, it has to stay streetable.
Must keep cats and be able to pass tailpipe emissions. No Front Mount I/C's
I autocross pretty often, throttle response and bottom end power are important (read: no massive turbos)
With it's limited availability, I don't think I'd be comfortable doing an E85 conversion.
Stuff I'm considering now and wondering if are worth it:
Full Header (equal length??)
EQ or Grimmspeed Exhaust crossover with stock manifolds
750cc Fuel Injectors
Maybe a Top Mount Intercooler, but assume this will cause more throttle lag
I know I'll probably discuss with Mike at GST too... but knowing how busy the guy is I hate bugging him.
I'm also considering putting the money into a new Limited Slip unit for the Rear to try and dial out more understeer...
Opinions/thoughts requested.
12-03-2014, 09:28 PM
#2
Registered User
Thread Starter
iTrader: (5)
Join Date: Jul 2004
Location: San Jose, CA
Posts: 4,300
Car Info: http://kiva.org/invitedby/brett4254
My old dyno results thread here
https://www.i-club.com/forums/bay-ar...sults-257467//
https://www.i-club.com/forums/bay-ar...sults-257467//
12-03-2014, 09:49 PM
#4
All depends what you think streetable is. Some guys with 450-600whp (not saying that's what you're going for) think it's more streetable than stage 2 or even stock. All because the turbo kicks in later in the rpms so just cruising around town you're not in boost so much.
12-03-2014, 09:56 PM
#5
All depends what you think streetable is. Some guys with 450-600whp (not saying that's what you're going for) think it's more streetable than stage 2 or even stock. All because the turbo kicks in later in the rpms so just cruising around town you're not in boost so much.
12-03-2014, 11:36 PM
#7
12-04-2014, 07:21 AM
#8
How about a meth kit? I know alot of guys go the e85 route for power but it was an inconvenience for me as a daily driver so I went the meth route. I have it triggering at 13psi so most daily driving will never use any. You will get a few more lbs of boost from your current setup.
As you know, pushing power on a stock block is always a gamble. Good to have some cash on the side for the unexpected.
As you know, pushing power on a stock block is always a gamble. Good to have some cash on the side for the unexpected.
12-04-2014, 10:33 AM
#14
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iTrader: (7)
Join Date: Dec 2002
Location: Stockholm
Posts: 7,441
Car Info: 2018 Golf R Variant
My vote goes for an '06-'07 Z06 LS7 swap, complete with the rear trans-axle fabbed into a custom subframe in the rear. Would be pretty sweet. Make it look bone stock other than Z06 wheels and brakes.
