Frissby
06-21-2005, 12:56 AM
Here is some info to get you aprised of my situation, I hope you guys can help me out:
I am from California and am in the military. I bought my EVO new last February when I was stationed in Lemoore. As soon as I finished the break in period I had a Greddy Prof B Spec II boost controller, HKS cat-back, and Autometer boost and oil pressure gauges installed. Not long after that I got a SEL so I took it back to the place that installed my mods to have them check it out. They said it was a P0300 code which meant, of course, random engine misfire. This was in March or so of 2004 so that didn't set off any light bulbs in my head because I still had no clue the magnitude of the P0300. They reset the code for me and I was good for a couple of days but it came back (along with the 5th gear cruising vibration that you have to let off the gas and get back on it to resolve, temporarily of course). Then I started having a worse problem, couldn't boost past 12 psi, so I went back to the shop again and had the boost controller removed, thinking it had something to do with that. Still couldn't boost past 12 psi. So, I took my friend's advice and took the car to Vishnu to get their flash (and downpipe and hi-flo cat). Once there, they flashed it and took me for his famous test-drive in my car, he couldn't get it to boost past about 12 psi either, so once back at the shop they trouble shot and figured out that I had probably been running too much boost with my boost controller and had ruined my coil(s). They replaced those and Shiv was able to drive the car boosting it at a consistent 21 or 22 psi. So I left happy. You see, I had the P0300 but it was totally unrelated to the coil problem, but I didn't know that at the time. So I drove back to Fresno and about half-way there in 5th on the freeway going about 80 my SEL came back on and it started to sputter, no accelloration, until I let off the gas and got back on it. So a lot of time passes by and I just live with it because I am hearing and reading about all of the horror stories about people going to the dealership with mods and having their warranties voided on the spot. So I ship the car to Italy because I am transferring and figure I can just park it for three years and worry about it when I transfer back. So basically I guess my question is, if I want to fix this problem myself, without the help of a dealership, since there aren't any here that I can find on the Internet, how would I do it? I have seen people say that you need a new transmission, I have seen people say that a stand-alone engine management computer would fix it, and I have read that it's possible that pistons might be bad. I am not worried too much about voiding my warranty because I am at 35000 miles now and will be here for another 3 years, I just want to fix the car so I can mod it more, but it would be pointless to mod a car that will throw codes and screw with my timing, because when my SEL is on, I swear it feels slower than stock. So anyway, that is my story, sorry it was a book, but I really want to fix this problem, it makes me so mad sometimes I want to drive the thing into a wall and end us both, not really, but you know my pain. Thank you. Christopher Frisby.
I am from California and am in the military. I bought my EVO new last February when I was stationed in Lemoore. As soon as I finished the break in period I had a Greddy Prof B Spec II boost controller, HKS cat-back, and Autometer boost and oil pressure gauges installed. Not long after that I got a SEL so I took it back to the place that installed my mods to have them check it out. They said it was a P0300 code which meant, of course, random engine misfire. This was in March or so of 2004 so that didn't set off any light bulbs in my head because I still had no clue the magnitude of the P0300. They reset the code for me and I was good for a couple of days but it came back (along with the 5th gear cruising vibration that you have to let off the gas and get back on it to resolve, temporarily of course). Then I started having a worse problem, couldn't boost past 12 psi, so I went back to the shop again and had the boost controller removed, thinking it had something to do with that. Still couldn't boost past 12 psi. So, I took my friend's advice and took the car to Vishnu to get their flash (and downpipe and hi-flo cat). Once there, they flashed it and took me for his famous test-drive in my car, he couldn't get it to boost past about 12 psi either, so once back at the shop they trouble shot and figured out that I had probably been running too much boost with my boost controller and had ruined my coil(s). They replaced those and Shiv was able to drive the car boosting it at a consistent 21 or 22 psi. So I left happy. You see, I had the P0300 but it was totally unrelated to the coil problem, but I didn't know that at the time. So I drove back to Fresno and about half-way there in 5th on the freeway going about 80 my SEL came back on and it started to sputter, no accelloration, until I let off the gas and got back on it. So a lot of time passes by and I just live with it because I am hearing and reading about all of the horror stories about people going to the dealership with mods and having their warranties voided on the spot. So I ship the car to Italy because I am transferring and figure I can just park it for three years and worry about it when I transfer back. So basically I guess my question is, if I want to fix this problem myself, without the help of a dealership, since there aren't any here that I can find on the Internet, how would I do it? I have seen people say that you need a new transmission, I have seen people say that a stand-alone engine management computer would fix it, and I have read that it's possible that pistons might be bad. I am not worried too much about voiding my warranty because I am at 35000 miles now and will be here for another 3 years, I just want to fix the car so I can mod it more, but it would be pointless to mod a car that will throw codes and screw with my timing, because when my SEL is on, I swear it feels slower than stock. So anyway, that is my story, sorry it was a book, but I really want to fix this problem, it makes me so mad sometimes I want to drive the thing into a wall and end us both, not really, but you know my pain. Thank you. Christopher Frisby.