I was on here about a month ago and got laughed off the site because of my lack of knowledge.. but im back with more questions. I recently bought and 05 evo 8. It has the slowboy shortblock, walbro fuel pump, upgraded ic piping, a custom intake, and B&B exhaust and some other stuff. I just got it tuned wednsday and it could only make 292/249. They said the problem is that it is running of the stock ecu. They said to see if it is even possible to run the 2.3L stroker with a stock ecu. Of course, i had no idea so i decided to ask ya'll. I'm prolly gonna sell it soon too if i hafta put and aem on it. It also could use a downpipe and a bigger intercooler. So where could i find a buyer for it also.

 

So do you have a stroker kit or a built 2.0?

Do you have an upgraded turbo or just the stocker? Who told you all this info(who tuned you)?
Does it have cams?

 

I have seen cars make well over 500 HP on the stock ECU. KevinD on here is an example. Keep the stock ECU for sure. Spend the money on something else...get a full 3" exhaust, cams (272's), the lower piping.... there is no need for an aftermarket ecu yet. In the past two weeks I have turned 3 cars back to stock ecu, 2 ran an AEM, one ran altronics (spelling error Im sure), all three made more power and ran better on the stock ECU. However I dont not have a experiance working with one on a 2.3L, but I imagine it should be fine..... in about a month I can follow up, we have scheduled a 2.3L swap in a car running stock ECU.

 

I just got it tuned by Batleground in atlanta.

Like i said before, I don't know a whole lot.. but i thought that having a slowboy shortblock.. aka 2.3 stroker meant that it was a whole new engine. I don't think its a kit. I don't believe it has cams. Someone recently said it sounded like it did but others say it doesn't. I got a list of work done on it and cams are not on it. I can post the list if i need to. It has a 3" exhaust just not the downpipe. Batlegroung said that they have NEVER heard of anyone running the Stroker with a stock ECU and said that must be the problem. They said they werent sure if it was a knock(SP?) sensor hearing to much noise or something like that. O yea.. and it has forged pistons. They said that could be a huge problem.

 

And it does have the stock 10.5 hotside. Heres the list and ad that i found:


"I am the second owner of this vehicle. I purchased this from a friend of mine in Charleston SC. He ordered the car new, as I would have ordered it; no sunroof, nor leather seats. It instead has the suede seats with blue cloth centers. I purchased the vehicle from him with 3,300 miles on the clock. His company GSC motorsports had performed a few light tasteful mods to the vehicle that came together nicely to make this a great all around car. The vehicles brakes were upgraded with D.O.T. legal Stop-tech stainless steal brake lines, and high quality motul fluid. The handling was improved with Hotchkis sport springs, a Hotchkis adjustable rear sway bar and a Cusco prototype aluminum rear trunk brace bar. A few tasteful exterior mods, such as the taillights, mini antenna and the Euro rear badge were also added. The interior was kept stock but for the Defi boost gauge, Innovate wideband oxygen sensor gauge, custom GSC aluminum pedal covers and a B&M short shifter to crispen up shift response. The engine and drive train was lightly massaged with the basic bolt-ons. The intake tract was freed up by a custom GSC intake, with K&N, innercooler pipe kit. Boost is modulated by a Hallman Pro manual boost controller. In anticipation of future mods, an ARP M11 cylinder head stud kit, an ACT clutch and a Walbro 255 lph fuel pump was added. The exhaust is has been improved using a Injen 2005 MR test pipe, and B&B cat back exhaust. This exhaust improved airflow without killing your ears. Other mods included a stainless steel clutch line, a GSC aluminum oil catch can and a GSC power division mini battery clutch kit complete with Odyssey drycell mini battery.

I purchased the vehicle just as I have previously described to you. I drove the car sporadically since purchasing the car in 2005 as it was my 2nd and sometimes 3rd vehicle. In anticipation of installing a larger turbo kit, I purchased a Slowboy racing stage 2 shortblock. I contacted GSC once again to complete the install. To date the new engine has been driven roughly 1200 miles since install. The oil was changed at 100 miles, 500 miles and now at 1200 miles. I swapped over to synthetic oil on the 3rd change. I did not boost the engine during the first 200 miles nor did I rev the engine past 4000 rpm. between the second and third oil changes I gradually increased the boost and rpm. Now after the third change, I have turned the boost up to the stock 18 psi. I still have not revved the engine past the red line. The car runs great at this point and has not used any oil at any point. Before the shortblock install the engine was dynoed at Batlground in Atlanta, Ga. The engine made ~320 awp on 93 octane @ 20 psi of boost. The computer has not been flashed and the timing and fuel curves are still factory.

After putting some miles on the new engine, I was going to have it tuned and flashed. I have not done this yet. According to the Innovate wideband the car currently runs safely in the 10.0-10.8 A/F range.

Since 2005 I have gradually shifted priorities in my personal life and have decided to part with my part time project/hobby Evolution 8.

This car has never been wrecked, or flooded, or even had any paintless dent repair. It has a clean carfax. Notice the brake calipers are nice and red, no heat damage. The car has never been auto crossed or road raced. The notoriously soft and short lived factory tires are nearing the end of their life cycle, there is only about 4-5/32s left in spots. The air conditioner blows cold, and the heater toasty warm. This car is being sold by an individual, not a dealer, so there is no state sales tax to pay in the state of Georgia. The car is located about 30 minutes east of Atlanta GA.

Please message me if you have any questions, or if you feel like I have left anything out of this auction.

This car is being advertised for sale in several places, so I do reserve the right to end auction at any time for this reason.









List of modifications, performed by GSC Motorsports

Engine:
Slowboy Racing stage 2 forged shortblock, with Ross pistons, Eagle H beam rods
GSC Power division custom intake
K&N cone air filter
GSC Power Division Innercooler pipe kit
Hallman pro manual boost controller
ARP M11 head stud kit
Stock 2005 Turbo; 10.5 hot side
Injen 2005 MR test pipe
B & B exhaust

Exterior:
UK Evo rear badge in black
JDM spec rear taillights
Mini radio antenna

Interior:
B & M short throw shifter
Defi Boost guage
Innovate Motorsports wideband oxygen sensor and guage kit
GSC aluminum pedal covers

Suspension:
Hotchkis Evo 8 sport springs
Hotchkis adjustable rear sway bar
Cusco prototype trunk brace bar


Misc. mods
ACT clutch
Samco radiator hose kit
Walbro 255 lph fuel pump with fused, direct to battery, 12 v mod
GSC Stainless steel clutch line
Motul fluid in clutch system
GSC Universal aluminum oil catch can
GSC power division Evo 8 mini battery kit
Odyssey drycell mini battery
Stoptech Stainless steel brake lines
Motul brake fluid"

 

just fine someone who knows how to tune the stock ECU well and you are set. The size of the motor doesn't mean anything if you are retuning the maps. Many people on many different cars change the bore and or stroke of cars all the time and don't change out ECUs. Good luck.

 

I love AEM EMS but just because you have a 2.3 on pump gas doesnt mean you have to upgrade to an AEM EMS. I've done a couple 2.3 on the ecu on pump gas. Unless something mechanical is wrong you should have no issues

 

Must of had a crappy tune on those aftermarket computers! I highly doubt that the stocker can be dialed in better than an AEM EMS, then again the ECU is only as good as the one who tunes it.