probelm with supercharger

[97XJM62]

I installed a m62 supercharger kit on my 4.6 stroker a while back. It ran fine for about a month then but now it occasionally back fires under 1000 rpms. It also didn't seem to increase output much. I replaced the mpa sensor, tps, and cps and that didn't work. Any ideas?

tia
tommy

[jeepxj3]

IDK but maybe spark plugs or vacuum hose leak.

[97XJM62]

I was not able to find and vac leaks. I bought it used so maybe its missing something? It looks like its similar to this one http://www.cherokeeforum.com/attachment ... edium-.jpg

[Reelm n Rubi]

did you add electronics to add more fuel?

[vashxj]

is it building boost? how is it tuned?

[97XJM62]

Its building about 3 psi of boost.. it came with some sort of black box tuning module that I believes plugs into a injector or sensor on the manifold.

[97XJM62]

Anything I can try? Anyone recognize the manufacturer of this kit? Maybe get in touch with them and see what is missing.

[jeepxj3]

any numbers on the box?

[97XJM62]

at first I didn't see anything bur with a closer look there was a cf decal on it. removed that and it says splits second ftc1. Also another number on end, but that came up with the cf decal I removed.

[jeepxj3]

It also didn't seem to increase output much.

How was the output the first month? And now it backfires at 1000rpm and less output?

[97XJM62]

From what I remember the output at first was pretty good. its down a bit now. the backfiring usually happened below 1000.. sometimes it doesn't/

I'l call splits second tomorrow they might be the people familiar withthis supercharger.