street racer - Subaru WRX Forum
 
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#1 Old 05-31-2011, 01:19 PM
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street racer

hey guys, i have a stock 02 WRX JDM spec, living in italy, i want to be able to drive it everyday but every once and a while open her up on some auto bahns. right now i have a aftermarket Blitz Super Sound BOV, and i have a FMIC and Short Ram intake on order as well as up grading the rotors and all new pads around. to start out i am sure in the very soon future I will be upgrading my fuel system to handle the increased power I'm planning on. my goal is maybe 400-425 on the stock motor. with all bolt ons. Does this sound realistic? Here is what I'm looking at now, like I said FMIC, (possibablly a new TMIC) Short Ram Intake, BOV, turbo upgrade (IHI V23???) and of course a fuel system upgrade? does anyone have an idea of if this is a good start and and other suggestions as well. im open to anything. thanks guys

chris
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#2 Old 05-31-2011, 03:20 PM
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FMIC is a bad investment. Everything else sounds ok. Your goal of 425hp at the crank is not a number I'd be trying to reach for on a high mileage 2.0L. If you're at 100k miles, I wouldn't upgrade the turbo at all unless you're willing to and can afford a rebuild WHEN it happens. You won't get anywhere near that with a VF23.

Advertising street racing is not a good way to ask for help.
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#3 Old 05-31-2011, 05:14 PM
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When I saw Street Racer I thought OMFG!?! as if Subaru's don't already have a bad rep with the Boy's who think they have a right to spoil fun & forget to do thier real jobs!

I always thought it and reading no here confirmed it... FMIC is only going to increase the amount of time it takes for the air/pressure to build up (commonly refered to as LAG) and if you are "driving" around town a TMI getting a bit of engine warmth is, well... warm air makes engines run smoother lol seriously, it just doesn't compress to the same pressure resulting in a less volitile combustion! but out on the highway you'll gey all the air you need going through the TMI!
Short Ram? Nah... stick the filter up behind the H/light where it's meant to be and find a decent Plastic, Carbon fibre... even Firbre glass heat shield, and wrap up any metal intake piping or use non heat conductive materials... Stainless and Alluminium are second only to Copper for transferring Heat, thats why Radiators and intercoolers are made of Aluminium and radiators traditionally had alot of Copper!

Now for top end, Turbo's can double the output of any engine very easily... normally if you want to double the output of an NA engine, you would spend the majority of your budget on the bottom end... increasing the output on an already turbo'd engine by any more than 1/3 means spending big bickies on the bottom end. I say 1/3 because 75% is safe... the factory will tune an engine to produce 75% of what it can Handle and no more! same goes when they chhose turbo's... so basically if you want/need to go for a bigger turbo because your stocker can't cope... remeber that niether can your stock internals!
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#4 Old 05-31-2011, 08:52 PM
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Originally Posted by 4kita View Post
Now for top end, Turbo's can double the output of any engine very easily... normally if you want to double the output of an NA engine, you would spend the majority of your budget on the bottom end... increasing the output on an already turbo'd engine by any more than 1/3 means spending big bickies on the bottom end. I say 1/3 because 75% is safe... the factory will tune an engine to produce 75% of what it can Handle and no more! same goes when they chhose turbo's... so basically if you want/need to go for a bigger turbo because your stocker can't cope... remeber that niether can your stock internals!
He has a turbo motor. Stage 2 is 50% again stock power. People with good engines make over twice stock hp on the stock block.
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#5 Old 05-31-2011, 10:28 PM
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Thats crazy...
"Stage" has Never meant anything to me, even back in the Mid 90's when I started Building up a Mk2 Escort Rally car. there were people talking about Stage 1, 2, 3, 4 etc & others talking about 1/4 race cams & 1/2 race & 3/4 race etc... but now hang on what the hell is a race cam then? Coz a BCF3 was one down on the Rally Cam, there there were cams between that and the Circuit cam... And both of those are racing cams... and so is a Drag cam which pulls 1/2 as many revs again as a Rally cam! (so where the F*(& do stages fit in?)

If you start talking about angles & lift, and all the other things that actually mean something...

but it IS safe to say the car makers choose to tune thier cars to 75% of what they are capable of producing "SAFELY" & without modifying or replacing anything with un-economical parts that do not suit mass productionpourposes! So If you take your output up by 30% you are aproaching the peak of what whould be deemed safe... any higher and you run the risk of damaging engine componants or putting under stress levels that may cause premature Failure!

Now before you go and have your premature ejaculation by trying to make out you know everything! try reading what I say Dickhead!
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#6 Old 06-01-2011, 06:01 AM
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Again, 50% again stock power from exhaust and tune and thousands of people have +100k miles on setups like these. An STI turbo upgrade makes almost twice stock hp (for those who are numbers challenged, that's 7 times the increase in power that you say is unsafe), and on a healthy engine people have run these things forever. There are some cars who make 300 hp stock that are putting down 600-1,000 hp on stock bottom ends.

I read what you said perfectly fine, and I'm telling you point blank that your numbers are bogus.
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#7 Old 06-01-2011, 06:01 AM
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Why the name calling?

Anyone notice it's a JDM spec car?

Paul
2007 XT
2007 MS3
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#8 Old 06-01-2011, 06:15 AM
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Why the name calling?

Anyone notice it's a JDM spec car?
Yes. Only difference is that he has higher compression and AVCS.
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#9 Old 06-01-2011, 07:37 AM
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Alright very true maybe "street racer" was a bad topic title and i apologize about that, i am new to the whole forum set ups. thanks for all the info. right now i got roughly 76k miles on the car so not to high but i do understand what you mean about going to upgrade the turbo then i might as well do a full build. im not trying to build a race car by all means im just looking for a little extra power thats affordable and still drivable any other suggestions?
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