I have a 92/93 R32 gts-t manual. The throttle isn't 100% smooth or consent. When I am cruising the engine seems to drop or hesitate as if a coil failing. When I slightly press the accelerator, it will pick up faster then it should. These issues seem to be only when I am at the first 5% of the throttle, when I am cruising and it does not seem to be temp orientated; however, it is slightly worse when the car is cold. Along with these issues the car starts like a pig first thing in the morning or after an extended period. It requires turning over several times before idling up other wise it idles out as if its not getting fuel. Prior to a year ago the car was very easy to start. I have already purchased with in the past 6 months several parts, these include:
New Splitfire Coils
New ignition harness
Platinum plugs
An ignition module
Several second hand IAC valves
A temp sensor
MAF
New fuel regulator
I have checked all the vacuum hoses and replaced one. The car is for the most part stock. It does have a 6in HKS pod and a custom turbo back stainless steel exhaust. I am some what at an end to what I can check without out-laying lots of money for new and expensive parts. Other then the said issues the car runs great, there are no misfires, it idles perfectly and accelerates hard to the red line. It may seem like a small issue/s but driving it as an every day car, this gets very frustrating!