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Wondering if anyone else has this problem and what they did to fix it?

Basically when starting the engine from cold it takes about a minute or 2 before the thermostat opens.

During that time the engine feels really rough, when pushing the accelerator the engine starts to stutter when going beyond a certain rev range, until the thermostat opens (ie the temp gauge starts to move). Then it is fine.

It doesn't really bother me too much as it helps me warm up the car slowly.

Car is R32GTR with apexi pods and catack exhaust+cam gears.

I've also started to notice that it pings as well until the thermostat opens.

Is there something going on I need to fix quickly?

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my 33gtst is the same. when its cold if i accelerate too hard it sounds like its going ok but is jumping around like its gonna blow up. i am guessing that my old mechanic put the wrong oil in cause it kinda feels like the pistons arent moving smoothly. i am possibly completely off but just my guess.

This is a factory feature of the ECU to protect your motor when it is cold.

Until you have reached the expected operating temp it places a number of restrictions on the level of advance of the timing and other paramaters to stop you from working the engine too hard while it is cold.

If it runs well when it has warmed up then all is good as it is only doing what it was designed to do - it does become a problem though if it does not run crisp after it has warmed up and that is when there is something wrong that needs investigation and fixing.

You should just let your car warm up a bit anyway just before driving (On cold mornings).

I usually let it idle for about 2-3mins to get the engine oil circulating then start driving and keeping it off boost for about 5-10 mins of driving (light boost is ok) to get all other fluids going.

Then the car is fine.

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