help po! performance upgarde for 2002 Mitsubishi GSR

[fu_man_dave]

help po.. im driving a 2002 Lancer GSR Invecs II. nagbabasakali po ako na baka matulungan nyo po ako guys.. Ano po bang pwedeng gawin para maimprove ung lakas and takbo ng gsr? and san shops po pwede makabuy and makainstall nung parts. taga la union po kasi ako.. can u guys give me a basic set up and/or pag high end performance na..tnx po..

[niky]

Basics? Intake- Headers- Exhaust. Wag lang masyadong malaki yung headers at exhaust, because it's an automatic and a big bore exhaust will kill your low end torque.

Advanced? Palitan mo na yung makina... it can't handle that much boost. Evo engine ka na! Just set aside a whole boatload of money for it, because it sure as heck ain't cheap.

[ssaloon]

or you can get a 2nd gen mivec engine. costs a tad cheaper than an evo engine.

[the_wildthing]

Sir, if you do a search for previous threads on "GSR" you will find that an engine swap is your best solution to the 4G92 SOHC.

This might help: http://tsikot.yehey.com/forums/showthread.php?t=27649

[artpogi]

Turbo

[ssaloon]

actually, i know someone with a custom turbo setup on his 4G92 SOHC. sumisibak to ng WRX STi....

[fu_man_dave]

mivec engine? ano po un? clutchless transmission din ba cya? ung custom turbo setup po ba khit automatic cya pwede pa rin or do i have to convert it to manual pa? and how much po ba ang evo engine ngayn? evo engine comes with everything an db? 6 speed manual,etc.. thanks for the insight

[ssaloon]

MIVEC is mitsu's answer to honda's VTEC. typically, your surplus MIVEC comes mated with a closed gear ratio tranny. but you can still use your stock manual tranny. not sure if the OEM matic tranny will hold up, though.

pwede din custom turbo setup on a matic tranny, pero sayang naman yung turbo if you let the computer shift for you.

you'll need an evo 4-6 engine para hindi hassle ang pagkabit sa GSR. market price would be 130-150k for a decent evo 4-6 engine. kasama na tranny, ecu, fmic, turbo and baka brakes doon. 5 speed lang ang evo 4-6 IIRC.

[fu_man_dave]

first of all thnx bro for the info.. ok so if ihave my inves converted to manual.. then pwede na me sguro mg pag custom turbo db? so can u pls recommend a shop who can do a custom turbo set up? like ung nasa picture na gsr green. it would be much cheaper na lng cguro to go with a custom turbo setup that having a brand new evo engine db? and just in case meron ka din ba alam na shop or store na ngtitinda ng mga evo 4-6 engines?

[ssaloon]

it depends on how much boost you want to run. your stock internals can take up to around 7-8psi. anything above that, you'd have to change pistons, conrods, etc to be able to boost higher. so in the long run, papantay sa gastos ng engine swap. try MAC in merville, they specialize with mitsus. AFAIK, ERL MOTORWORX may gawa ng green gsr.

here's a good read on going for the custom turbo route:

Since so many people ask about turbo set-ups for gas-powered engines, especially on the newer and later pizza-body Lancers, I thought of posting a quick guide for the things you need to spend / buy for a complete turbo set-up and get it running.

1.) Turbo - ideally a T28- T3 sized turbine from Garret or anything similarly sized; this gives good throttle response, minimal lag and enough top-end power for 1.6 liter Mitsu engines, even the MIVEC ones. Bigger 2.0 liter engines can get a size bigger. Can be 2nd-hand / surplus or BNEW, just make sure its still in good working order.

2.) Fuel management - you'll need at least an additional injector controller (AIC) and 1 or 2 injectors with a total flow-rate of 700-1000cc/min. HKS and GReddy make AIC's, you can find various injectors at your favorite surplus shop. Trust me, an Apex'i S-AFC won't hack it here because an S-AFC cannot determine / identify boost. Hence, though you might be able to tune for 100% WOT at any RPM in max boost, any TPS reading in between with varying amounts of boost will cause poor engine performance. An adjustable fuel-pressure regulator won't also be enough in this case since the fuel pressure adjusts linearly, even with boost-dependent fuel pressure regulators. You need to be able to tune based on RPM, boost, TPS and actual engine load. It has to ba an AIC at the very minimum so you can squeeze out the most out of the set-up yet not be wasteful of fuel so it has a constantly safe AFR. Kung sosyal ka like Fatbastard, get a complete piggy-back ECU so pati ignition map / timing pwede galawin.

3.) Intercooler - any will do but ideally find something that has a large surface area even if the core isn't as thick. Surface area is more important especially in low-boost applications on relatively high-comp engines (for turbo). Not to mention it adds more visual aggression on your car if there's a huge i/c core jutting out of your bumper.

4.) Manifold and i/c piping - this is critical if you want a really nice and fast spooling turbo set-up. I've seen so many poorly designed and poorly built manifolds from both custom-fabricators AND big-name brands.

5.) Downpipe - you don't need to get a full exhaust system (though it is much better if you do so), you'll need to mate the turbo with the current exhaust that you have.

6.) Uprated clutch for manual transmissions - the stock clutch won't hack it here as well, you'll just spin the clutch. Don't ask me how I know. Traumatic explaining to an irate customer that his car makes 2x more power than his clutch can handle.

7.) Additional fuel lines for the AIC, oil lines for the turbo and water cooling lines (this depends on the turbo you plan to use if its water cooled as well).

8.) Highest octane fuel you can get (Petron BLAZE) and sparkplug 1-2 heat ranges colder.

9.) Boost gauge, a must in any turbocharged car.

10.) Proper tuning - without this, you just literally set on fire your hard-earned money

Why did I post all these? The cheapest way to building a turbo set-up is if you buy most of the expensive parts yourself such as the turbo, i/c and fuel management. Ask nalang what your tuner / builder wants you to get because if hindi maganda kinalabasan ng set-up mo, the tuner / builder will always say that's because the parts you got are not what he wanted / needed in building the best turbo set-up

Yung gagawin nalang ng shop is the manifold and i/c pipings plus installing / connecting everything else together.

Its also important to upgrade the brakes and suspension if you're adding more power.