NEW PROBLEM!! HELP!!

[kain86]

ok we has a ls/vtec swap that has a few problems but this should be the last!
the motor starts on it's own now and it fires. but after about 3-4.5k it sounds like the speed limiter hits????? it boggs down the goes back to 3-4.5k then again.........WTF could this be??? reps for any help!!!! thanx in advance...

[1flysi]

You are in fail safe mode (limp mode)

Your check engine light should be on. What are the codes?

[junior_tm]

try to take the cat converter out and rev again you will be deaf by the time you finish and you will see if it pass over 4 n revs normal get a new cat converter
that same thing happened to my car and i drove for 2 weeks like dat until i decided to check if the exhaust were clogged or sumthin and it worked

let me know if you try this n what the outcome was