Well to make things short and to the point, my friends EVO 8 is having some issues. First thing is the car is studdering through out the rpm range. When you give it gas it starts to cut out through the tach. we think the car could be running toooo rich, due to open filter? what could it be? please help if possible.

Next the car will not rev past 4500 in 5th gear at 100 MPH. could it be fuel cut off do to geting to much gas? Any ideals?

Well the car has a boost controler, some gauges, OBX piping(IC,INTAKE), stock BOV and air filter adapter with cone. Tubor timmer.

Checked plugs,good gas (91 +), no air leaks, car boost fine, oil is good. Is there anything else we can check for?

 

Did u check to see if any of the ic pipe hoses might be loose?

 

yes but we are going to check again, we have all new t-bolt clamps. anything else?

 

What is the boost set at? Is there any engine management or is he just running un-tuned with those mods?

 

what are the plugs gapped at?

 

the boost is set at about 14-15, and no EMS , we are going to check the gap sunday. Also this just started to happen befor the OBX pipes. we took off the ssq BOV long time ago. Is there any thing else to look for? , give me a list of things if anyone has had this problem. Should we mess with the stock BOV? Taking any help

 

One answer Fuel Cut

 

Any time you mess with the air intake you have to get it tuned

 

damn , so will this make the car run to rich or to lean?

 

way to lean....that is why they have the fuel cut so you dont blow it up

 

Buy a fuel pump and get a "flash" and the car will be good to go....dont drive it anymore till you get this done...because you still can cause damage....like burn a hole in a piston

 

Oh and after the flash set your boost to 21pounds so the car will actually make some power...that thing must feel like a civic at 14 pounds hitting fuel cut

 

I see your online is your yahoo name on here i have yahoo, we could chat faster,

so are you saying we need to get it flashed or reset the ECU?

 

I think he has a issue with the ignition(bad plugs, bad sparkplugs,faulty coils,faulty ground).


just my .2c

Carlos

 

ok that is somthing else to look into, we will check out that anymore?