just done installed turbo for my 93vtec lude 6psi. Car pull real hard but power is not smooth(some time in 3rd gear,2 and 4) just sometime . i feel power gain at 3400 rpm then drop around 4400rpm after that it pull all the way to redline

what cause it?? and how can i fix it??
can it be the spark plug? they put in some champion (spark plug)****
can you tell me which plug is best for h22 turbo

thanks

 

need more info.
what's your setup?
fuel management?
timing control?

 

How did you gap the plugs?

 

93vtec lude
garret t3/4, custom piping intercooler,vortech fmu, walbro fuel pum, tial wastgate
missing link was installed
only 6psi

 

don't even know my mechanic put them in

 

what trim turbo?
what fmu disk? probably 12:1 i bet..
what size dp, exhaust? with or with catalytic converter?

the type sparkplugs doesn't make that big of a difference unless they're gapped wayy off. heck, i'm using some generic autolite copper plugs in the stock heatrange right now.

just to be safe... you should stop driving in boost. you'll need to put your car on the dyno (or get a wbo2 sensor setup) to see where A/R ratio is at... before you blow your engine.