Well it will be for some-one in the know, my bugeye was completly standard and running perfect, ive changed to a vf35,fmic,3" straight thru exhaust,decat uppipe, and 550cc injectors..... Not had remap done yet, right that out of the way, the cars fires up 1st time no problem but runs really bad, idles around 500rpm maybe even less, then if i try to give it a lil gas it cuts out, if i unplug the maf it runs perfect a lil fast 2k ish but no judder or cutting out...... Now could the maf be nkrd or could it be the fact of too much air and mods without remap? I havnt drove it btw im jst checking it over before i get it mapped..... Also just to add enginemapper said i should be able too drive it off boost to him but its completly undrivable with the maf plugged in, any advice welcome cheers guys Lee

 

could be over boosting/fueling and you will need a remap for def with them mods

 

Oh yeah i know that lol its jst when the maf is in its undrivable, where graham said i should be able to drive it to him off boost, im not sure wether the maf is fooked or my car has responded worse than usual to the mods before a map? If u get me lol

 

its more than likely overfuelling bud by unplugging maf it cant read the air its taking in so may run better

 

So u reckon the maf is ok and it jst needs mappin? Forgot to mention i put the walbro in aswell.... Im only worried cos iv done everythin myself and im jst double checking everythin but touch wood the maf seems to be the only problem

 

Sounds like the DENSO ECU just can't cope with all the mods.......should idle OK and run on very light throttle but after that it will go closed loop and everything will start to go pants

Have you stuck on an induction kit as well ?

Shaun

 

Tbh i need a new one, iv stuck a ram air cone on the maf pipe but its not a good fit, but it wont start without the filter on it jst dies, but again unless the maf is unplugged ....... Am thinkin maybe get my brakes fitted then trailer it to graham , im jst worried he wont be able to map it if it wont drive with the maf in?

 

Like everyone said, it's likely overfueling, the mapper should be able to correct the fueling somewhat before he starts the mapping properly.

The Ecu decides how long the injectors should fire, and with larger injectors, it is feeding more fuel for the same firing time.

 

I feel i lot better now lads cheers at 1 st i thort my head gasket had gone cos its been stood all winter, i was sihtin it lol but a quick search on here lead me to pull the maf appreciate all the replys btw nice 1

 

This is it plugged in ..... Ignore the smoke from turbo it was the uppipe http://www.youtube.com/watch?v=prxh4...e_gdata_player