Boost Controller On STi?
Boost Controller On STi?
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Is it just me or is a boost controller a bad idea on a knock sensor equipped modern turbo car?
Bad gas -> knock -> ECU requests less boost -> boost controller laughs and says: "Must...make...more...powah... -> Boom.
Probably oversimplifying things here, but wouldn't a better solution be replacing the engine management with something better, not a band-aid like a boost controller?
Bad gas -> knock -> ECU requests less boost -> boost controller laughs and says: "Must...make...more...powah... -> Boom.
Probably oversimplifying things here, but wouldn't a better solution be replacing the engine management with something better, not a band-aid like a boost controller?
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Originally posted by adamRmr
A boost controller is only like $125! turbo x's WRX Plug-&-Play Harness is around 1000... i just want a little more POWER!
A boost controller is only like $125! turbo x's WRX Plug-&-Play Harness is around 1000... i just want a little more POWER!
You get more power from running advanced timing with good A/F and good EGT's than you will from running "mad boost, yo".
Thread Starter
Registered User
Joined: May 2003
Posts: 123
From: Santa fe NM
Car Info: WRX STi black/Gold rims
This is better"i have around 500 to spend on the sti what Do u think the best bang for the $ would be"? air intake?..Dont know anything about the 4's ,I know about the V8's!
Registered User
Joined: Nov 2002
Posts: 31
From: Novi, MI
We spent $750 and are running 301 whp as opposed to 248 stock. Over 50 whp increase or over 20% increase in power. Mods? Godspeed downpipe, Turbo XS HPBC, Blitz SUS intake. With an S-AFC II and more boost we can probably get even more power. The exhaust netted boost creep though so we are going to port the turbo before we test that.
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You rule. Too bad I'm not anywhere near MI so you can mess with my STi when I get it. Unless you'd be down to come to NY for a dyno session or 7. What are some reputable East Coast guys?
I'd much prefer a reflash of the stock ECU or something like a UTEC that keeps the DBW happy and doesn't trick the ECU. If Subie DBW is anything like Audi DBW, you have to be real careful about piggie-backing or throttle will get dialed back to 40% or so.
Besides, I'm a moron, I'll get silly one day, crank up the boost and shoot a rod into the car next to me. I'm all about the bolt-ons you can set and forget about. The last thing I want to worry about on a track day is blowing a rod or even knocking slightly mid-apex at a track in the middle of nowhere.
Gotta save up for that trailer, I guess.
I'd much prefer a reflash of the stock ECU or something like a UTEC that keeps the DBW happy and doesn't trick the ECU. If Subie DBW is anything like Audi DBW, you have to be real careful about piggie-backing or throttle will get dialed back to 40% or so.
Besides, I'm a moron, I'll get silly one day, crank up the boost and shoot a rod into the car next to me. I'm all about the bolt-ons you can set and forget about. The last thing I want to worry about on a track day is blowing a rod or even knocking slightly mid-apex at a track in the middle of nowhere.
Gotta save up for that trailer, I guess.
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Please don't. Adding more boost without any engine management will cause you trouble in a long run. More boost without tuning is dangerous, that's why Vishnu and Turbo XS cost $1000 and boost controller cost $125. I have seen 2 WRX suffered engine problem because of this simple "add mroe boost" idea.
-Bryan
-Bryan
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