well i just did this mod today and it aint bad.
the parts needed were the 01 ecu, 01 knock sensor. the knock sensor was 150$ and the ecu got it for 120$ used.
installation took about 40 minutues approximately and wasnt the hardest thing although some previous mechanic skills might help.
now i can rev my car upto 8100rpm. for all you guys that say that you rev upto 8400rpm, how can you say that? the car barely revs upto 8100rpm and then fuel cut off comes. do you mean that the revs at that point are climbing that fast that you cant even see it going to 8400rpm or the engine is too fast for the needle to go up that fast. i tested it on 1st gear, thats where the limit kicked in. damn now i gotta test it on 2nd.
lemme know. and if anyone is thinking to do this mod, its worth it, cz celicas are meant to be reved(not that much, but a little bit), and believe me 8100rpm is way better than 7500rpm, cz theres a pull going on between 7500rpm and 8400rpm.
since i was working under the Hood
, i also changed the lift bolts. my car had 15,000 miles on it and its an 02, it had the redesigned bolts on it already, i thought it was gonna be the old design bolts. believe it or not, there was a slight damage to the bolts, nothing close to break at all though. you can just tell that the gold color is off a part of the screw. i would take pix of it 2morrow just so you can see.
my suggestion is to all gts users that if you drive ur car hard, or go on lift several times a day, play it safe and change the bolt every 20,000 miles.