hey guys just finished my vl turbo conversion iv done all the proper stuff needed and legit.. now when we turned it on it running all over the place my fuel pressure is at 40 at the moment , iv been told i need a nistune which cost around $1000+ now then iv been told i need a normal tune on dyno which maakouts do ?? kinda confused so many peoples telling me different things , i just need a normal tune or full tune or what ??? brian

what ecu, plenum, injectores and turbo are you running? also what motor is it?

+1 for more details on exactly which you did on the 'conversion'

A6 and compression is a 8.5.1 to4e turbo with a high mount 6boost manifold forward facing plenum , vl turbo injectors vl turbo computer .. now the only line that isnt blocked is the line of the inlet manifold which would sit on the intake pipe on a stock intake pipe ( plastic ) thats still sucking in air but once i block it the car shuts down .. other the idle is very lumpy and when in drive its all over the place..

sounds like the air to your idle air controle valve isnt coming throught your afm, its coming straight from atmosphere. you just need to tap a line from just before the throttle body to the idle controle valve and it should be right bigger injectors should be considered for a turbo that size, even a set of gtr injectors would be worth it and then get a tune. nistune is good because it lets you keep an 02 sensor and near on stock driveability but if your looking for big power you are better off just going somthing like a microtech LT8, can pick one up for ~$600, wiring - do it yourself if you are confident or you should be able to get it done for <$500 and then a tune ~$300

thanks man , that has helped alot , but which line is that one exactly , would it be safe just to nistune and then can diagnose the problem just incase i touch something im not ment to and it gets worse.. well maakouts racing charges 250 for a tune and then powertune and unigroup over 1k .. but thanks again for the help yea i will need new bigger injectors how about the sard's 550's are they big enough

yeah the 550's will be alright. if your going to spend $1k on a nistune setup, you might aswell just find a cheap LT8 and wire that in. will make alot more power alot easyer. up to you what you want to do though. have a talk to the workshop and see what they say. the line that is open is about 3/4" and comes out the back of the plenum facing towards the passenger side of the car

yea thats the line that once i block when turned on it shuts off straight away , will the 550's fit in the normal fuel rail ? .. but yeah i will look into something it has hard , with the pricing and just to get a ecu but would i use a lt10 i can pick one up for 800 and wiring is made for vl turbo

I would get that hose sorted before anything else. As for ECU's, Microtech's are cheap for a reason. I would get a nistune or if you have the cash a Link G4 plug in.