abe

the 1400 rpm rattle is probably the heat shields on the cat....that was my exact problem.

bread

Is it hard to take off the heat shields around the cat?

abe

it is if the bolts are rusted.....drill 'em out if that's the case. otherwise, it's pretty straightforward.

ChillOutWayne

no one give yur hopes up tho, i was so excited to replace the header and remove all that garbage expecting the embarassment to stop...man was i pissed to find the same noise...im happy with it now tho, it makes it more of a sleeper

drdavidge

i bet the 1400 rpm is the gaskets, bolts and springs between the exhaust pipes because i had the same **** on my accord at 1800. honda sold me a "buzz kit" consisting of new springs and gaskets and bolts which fixed the problem, and acura has the same "buzz kit" for the integra. that will *probably* fix the 1400 (i think, and i hope) but the 3k-4k thing really pisses me off. how EXACTLY did you remove the heat shields? did you have a lift? what tools?

abe

the 3000 rpm buzz is probably from the heatshield right after the cat (but before the resonator) attached to the underside of the car. just take out the 2 10mm bolts holding it on, & you should be good.....well at least i was, anyway.

drdavidge

where are the 2 bolts? how can i get to them easily?

abe

jack your car up, get underneath, and you will see them (assuming you see the heatshield that i'm talking about)

drdavidge

hmm ok ill try that...do i have to take off any of the plastic mud guards underneith the car to get to the 2 bolts?

jcolem3

The heat shields are most likely not your problem. I used to have a 95 gsr and the header internally has something that comes loose and can't be fixed. Best option is just to get a new header. I went with the dc sports 421 ceramic header, but if you plan to do some serious engine work later go with the JDM 41 series.