two questions:

1. anybody experimented w/ different gaps( sparkplugs) on ls turbo?

2. out of nowhere my car starts breaking up real bad in boost. its fine during negative pressure, but as soon as i hit -1psi it stars breaking up and doesnt wan to go anywhere(no pull). i have missing link and its worked perfect for a while until now. it used to smoothly go from vac. to boost. all injectors were replaced and im gettin spark. also a back fire used to occur during 1-2nd gear, only when muffler is off though(waiting to get time to weld it). nething would help. thanx

 

nobody huh?

 

1st.. The missing link is a 1 way check valve. they do go bad, and if that were the case, it would case issues like you are having.

2nd, A check valve is a Hack, And I know you may be on a budget, but what will that budget look like if you damage your motor because you cut a few corners?

You can pick up a 2-3bar map these days for pretty cheap and then have you OEM ecu modded to give you the ability to fully tune you car(crome) for little more. you dont have to spend alot to get alot. you just need to know where to spend you money on what

I dont condone this. but if you REALLY need a new check valve, LMK what year you motor is, . I may have 1 for you in stock brand new in that package(the real Missing Link) not a knock-off brand. LMK if I can help.......

 

its not your spark plugs unless u have a couple melted.

what are u using for tuning? fmu? afc?

 

fmu and safc2( set at stock til it can be tuned) i have a misssing link(the brand) it has a litlle filter on it that i have already replaced. plugs are fine, the car is running rich. it ran perfect for a while til i really got on it.

 

that information could of been useful a bit earlier, what are yur mods,?? injectors, ignition? ECU?? It just may be a tuning issue..