Hope someone can help with this one as I have just about torn out what little hair I have left in frustration...
Recently had a walbro fuel pump, HKS FCD chip, HKS VFC chip, full decat (bit of a story there), speed delimeter chip and finally HKS EVC 5 Boost controller.
Problem is that the car will not exceed 1 BAR before turbo cut kicks in.
To solve this removed the restrictor ring...didn't cure problem
Had a friendly Japanese waiter (!) translate the HKS boost controller instructions and as a result removed the stock boost controller soleniod...no effect.
Really stuck where to go now! I think English instructions for the boost controller would be a major help if anyone could assist.
Question...why the feck do HKS supply goods to the UK market with fecking Jap instructions!!!!!!
Rant over!
Any suggestions as to fixing this or things to check would be appreciated.