Tunit are one of the better tuning boxes on the market, but like tuning boxes they only kid theecu to put more fuel into the engine, they are safe to us and work well the only down fall is added soot and smoke which can cause sticky VNT,but saying that even stock mapped PDs suffer from sticky vnt. Tunit tuning boxes cost more than a remap but you can use them on your next car or sell it on and get your money back, We can supply and install the tunit tuning boxes if needed.
The best solution is a full software remap which allows the fuel to progress linear and the boost the make a cleaner burn, plus a well remapped car will suffer less from vnt issues. Our spec1 remap takes the 105 TDI to 145bhp/245lbft with a really strong broad linear torque band which will transform the car 100% back to back with a tuning box the remap is night and day,much better quality.
Buy next months copy of Golf Plus and you can get a full rolling road remap with diagnostics for £235 from the normal rrp£285. or £275 allinc for the mobile remap service to your or work address, or a free trail remap if you pop to us.
Nick