atlanticblue98
Well-Known Member
back in January i attended a dyno day at Brother's Performance here in Florida. i threw my Cobra on the dyno for shits and giggles and it produced a whopping 208rwhp and 257rwtq breaking up at 4200rpm 
http://www.youtube.com/watch?v=firgvyBB2YM
i was told over and over again that the IMRC's were the problem. well i FINALLY decided to get it done, either clean them or delete them.
i went to the track just to practice driving a manual trans at the track and to get a before time to compare to after the deletes.
best time: 14.7@93mph with a 2.1 60 ft. i wanted to cry :cry:
http://www.youtube.com/watch?v=o9lbJd_vjx4
got the plates out and saw instantly why there was a power drop... they were disgusting. absolutely terrible. the driver's side plate was fucked up. the bracket that holds the cable was bent badly, the cable was kinked and not even connected to the IMRC plate. even if the cable was connected, the butterfly valves were so stuck, it wouldnt have made a difference.
the passenger side wasnt as bad, dirty, but still functional.
since the driver side was so bad, i decided to just delete them.
this is after breaking up most of the Carbon deposits that were caked onto the plates...
after cleaning and removing the buttlerfly valves in the plates, i went to check out the intake valves in the heads and see how nasty they were. they werent too bad considering it is 15 years old and has 106,000 miles except for one thing...
i found this little baby INSIDE the secondary intake port for cylinder #5
yep, a metal EGR gasket from the previous owner's attempt at a delete. i thought it couldve been dropped in there by me, but it was jammed down there pretty good and was, as you can see, torn up by the intake valve. luckily the intake valve looked good (dunno how that didnt get scratched or worse)
so i was left with this
and a messy ass garage
bolted everything together, started her up, and Vacuum leak! furthest back fuel injector on the passenger side would not seat in the IMRC plate. Fuel rail bent somehow during dis-assembly.
got the rail repaired and went to install. started up great, great idle. man was i happy, until my alternator stopped working. found out a wire was cut when reinstalling the coolant crossover. repaired the wire and what do ya know? it holds voltage again!
what a shitty week it's been. but man it was worth it, car pulls so so so much harder at 3500rpm. currently it is still untuned so under 3500 i get a stumble or two and it doesnt pull as hard as before, but that'll be taken care of soon.
feels like Cobra V-tec :lol:
and to celebrate the deletes...
http://www.youtube.com/watch?v=wPRh6UNvqMM
cant wait to hit the track this friday and really see the difference
http://www.youtube.com/watch?v=firgvyBB2YM
i was told over and over again that the IMRC's were the problem. well i FINALLY decided to get it done, either clean them or delete them.
i went to the track just to practice driving a manual trans at the track and to get a before time to compare to after the deletes.
best time: 14.7@93mph with a 2.1 60 ft. i wanted to cry :cry:
http://www.youtube.com/watch?v=o9lbJd_vjx4
got the plates out and saw instantly why there was a power drop... they were disgusting. absolutely terrible. the driver's side plate was fucked up. the bracket that holds the cable was bent badly, the cable was kinked and not even connected to the IMRC plate. even if the cable was connected, the butterfly valves were so stuck, it wouldnt have made a difference.
the passenger side wasnt as bad, dirty, but still functional.
since the driver side was so bad, i decided to just delete them.
this is after breaking up most of the Carbon deposits that were caked onto the plates...
after cleaning and removing the buttlerfly valves in the plates, i went to check out the intake valves in the heads and see how nasty they were. they werent too bad considering it is 15 years old and has 106,000 miles except for one thing...
i found this little baby INSIDE the secondary intake port for cylinder #5
yep, a metal EGR gasket from the previous owner's attempt at a delete. i thought it couldve been dropped in there by me, but it was jammed down there pretty good and was, as you can see, torn up by the intake valve. luckily the intake valve looked good (dunno how that didnt get scratched or worse)
so i was left with this
and a messy ass garage
bolted everything together, started her up, and Vacuum leak! furthest back fuel injector on the passenger side would not seat in the IMRC plate. Fuel rail bent somehow during dis-assembly.
got the rail repaired and went to install. started up great, great idle. man was i happy, until my alternator stopped working. found out a wire was cut when reinstalling the coolant crossover. repaired the wire and what do ya know? it holds voltage again!
what a shitty week it's been. but man it was worth it, car pulls so so so much harder at 3500rpm. currently it is still untuned so under 3500 i get a stumble or two and it doesnt pull as hard as before, but that'll be taken care of soon.
feels like Cobra V-tec :lol:
and to celebrate the deletes...
http://www.youtube.com/watch?v=wPRh6UNvqMM
cant wait to hit the track this friday and really see the difference
