Hi All,

Please help.

I just purchased a second hand EVO X 2009 MY09, 4 days ago, and around sharp or sweeping left hand corners the car spits and splatters on acceleration, even with a full tank of gas.

Right hand corners are fine, no problems what so ever!

I don't know what it could be.

Fuel, wheel speed sensor, who knows?

Any help would be much appreciated!

Thanks,
Daniel

I would check your wire connections and grounds.

what kind of mods does you have? possibilities are great.

Bought it from a dealer? Take it back and get them to fix it.

If it is fuel starvation, check the fuel pump and housing. And also ensure the in tank fuel line is connected to the housing like it should be.

So it turns out it can't be fuel starvation because it happens on a full tank of fuel.

Mods are:

E85 - 304 Kilowatts at the wheels @ 28psi

BP Ultimate 98 - 280 Kilowatts at the wheels @ 25psi

Forced Performance Red Turbo with Anti-Surge and Upgraded Wastegate Actuator

Kelford 214-B 272 Degree Camshafts with Beehive Springs and Retainers

ARP Head Studs

AEM Fuel Pressure Regulator Kit

Fuel Injector Clinic 1000cc Injectors

HKS EVC 6 Boost Controller

Defi CR Advance Boost Gauge and Control Unit

Forge RS Blow Off Valve

Ultimate Racing 3” Turbo Back Exhaust with Hi-Flow Metal Cat and Titanium Tips

ETS 4” Intercooler Kit with Polished Piping

AMS Air Filter Kit with Polished Piping

AMS SST Transmission Cooler

Deatschwerks 300LPH Fuel Pump Kit

AMS Performance Silicone Radiator Hose Kit

Moroso Oil Catch Can Kit


***Handling***

HKS Hipermax 3 Sport Fully Adjustable Coilover Suspension (10Kg Front, 8Kg Rear)

Doluck Braided Brake Lines

Ferodo DS2500 Brake Pads Front and Rear

DBA 4000 T3 Slot Club Spec Rotors Front and Rear

Wow. If you bought the car with all those mods, you may want to double check to make sure the tune is fine. Post a datalog, or have a local shop who's experienced with evos check it out for you.

It turns out it can't be fuel starvation because it happens on a full tank of fuel. Surge tank manufactures conquer

I’m surprised no one else has experience this same problem on this forum?

It’s not the tune because it was recently done by a well-known tuner here is Australia 2 days ago.

The car drives perfectly in straight lines and around right hand corners.

Around left hand corners its fine as long as your drive it moderately, but when under throttle the car jerks forwards and backwards violently with slight pops out of the exhaust (not back firing) 3 or 4 times until you release the throttle.

Release the throttle, straighten the car and apply throttle again and she drives perfect.

Mods are below:

E85 - 304 Kilowatts at the wheels @ 28psi

BP Ultimate 98 - 280 Kilowatts at the wheels @ 25psi

Forced Performance Red Turbo with Anti-Surge and Upgraded Wastegate Actuator

Kelford 214-B 272 Degree Camshafts with Beehive Springs and Retainers

ARP Head Studs

AEM Fuel Pressure Regulator Kit

Fuel Injector Clinic 1000cc Injectors

HKS EVC 6 Boost Controller

Defi CR Advance Boost Gauge and Control Unit

Forge RS Blow Off Valve

Ultimate Racing 3” Turbo Back Exhaust with Hi-Flow Metal Cat and Titanium Tips

ETS 4” Intercooler Kit with Polished Piping

AMS Air Filter Kit with Polished Piping

AMS SST Transmission Cooler

Deatschwerks 300LPH Fuel Pump Kit

AMS Performance Silicone Radiator Hose Kit

Moroso Oil Catch Can Kit


***Handling***

HKS Hipermax 3 Sport Fully Adjustable Coilover Suspension (10Kg Front, 8Kg Rear)

Doluck Braided Brake Lines

Ferodo DS2500 Brake Pads Front and Rear

DBA 4000 T3 Slot Club Spec Rotors Front and Rear

This is the only video I have for the time being, its not very good.

https://www.youtube.com/watch?v=e6Sf...ature=youtu.be

What does the ayc display show when you're going around turns?
Seeing as you have the twin clutch it may be transmission related.

Everything is turned off Traction yaw etc. nothing comes up

The tranny was tuned with the car, yes?
Might wanna take it back to the tuner or a mitsu dealer to figure out what it could be.

Have you seen this thread?
forums.evolutionm.net/evo-engine-turbo-drivetrain/269450-car-sputtering-when-trying-make-turn.html

That thread is about 9s and the problem happened in both directions because it was the ACD. But I'd still like to know what the AYC display is showing in this case because that could explain why it only happens with left turns.

With that said, my first guess is still the fuel pump, followed by a engine grounding wire that gets pulled in left turns.

Update - The fuel starvation problem has been fixed. It turns out the fuel pump wasn't installed correctly. The connected fuel filter was positioned along side the fuel pump, rather then underneath, so when the car went around left hand corners the fuel pump would move in the swirl pot, and lean against the fuel filter cause it to starve. I installed a different fuel pump with a fuel filter that sat freely underneath the fuel pump. Hope this helps someone else with the same problem some day.

Or just go to a mechanic who knows what he's doing.