justinschmidt1

Car is a boosted 4.6 2v....ran fine last night, now today it pretty much just dies at like 3500-4k.

I dont know whats going on.

feels as if its getting no spark, fuel, or anything after 4k.

it wont even rev past 4k cause the bogging is so intense

What should I check?

lilcrate

have you checked your air/fuel ratio? That can sometimes cause such a thing..

high_up1

check for an intake leak. I'm not exactly sure, i havent played much with these lately, been working on some turbo 4 cyl, and pro tractor and truck pulling motors, but if the mass air is before the leak the car will be thinking its getting more air than it is and dumping fuel because. it will run like ****. with the supercharger it is making boost just revving up so it makes it worse. a turbo doesn't make boost without load so it will still rev sitting still. common things are couplers blowing off or holes in piping or couplers. check anywhere the piping could rub on anything. hope this helps.

justinschmidt1

My a/f ratio should be good if everything is working.

It was just dyno tuned like 3 weeks ago.

I checked all the piping.

Im blow through so that wouldnt work anyway.

945LSTANG

any funky noises coming with the loss of power?

elburro99blnGT

What about fuel pressure? What pump are you running? Could the computor have gone into a "safe mode" for some reason? Try unhooking the battery for awhile and try it again. Sorry, just thowing stuff out.

mustangman281

Pull your plugs. What type plugs? Sounds like a misfire. I burned up 2 plugs a week after getting tuned and it did the same thing to me except I couldnt go past 3000rpms.

justinschmidt1

No noises, engine lights, or any other signs of a problem other than it falling on its face when I put any load on it above 3k.

I dont even know what plugs are in it cause my tuner changed them. Im gonna ask him and see what he thinks.

CAMDUP

clogged fuel filter

justinschmidt1

That would make a lot of sense actually.