R33 series 2 problem

[SIR33]

hey i have a strange hesitation when accelerating. it accelerates to about 3800/4000rpm then really struggles (big lack of power) then once it gets to 5000/5200rpm it kicks hard again at full boost. any ideas?? please!

only mods are turbo back exhaust, k and n pod and turbo smart bov. no boost controllers.

[paulr33]

how long have u had the pod filter? was it brand new when u brought it? could be dirty afm?

[JimX]

Possibly over-fuelling (get S-AFC) or incorrectly gapped plugs?

[TTT]

either regap your current plugs to 0.8mm or get some new ones that are already gapped to 0.8mm or gap some new ones for yourself..

[Neil]

Lets do this by trail and error. Yes Just make sure they are gapped to .8mm. 1.1mm is great for modded cars but you have much the same as I had.

Yes try cleaning the air-flow meter with brake cleaner. Take it easy on the trigger,,,just a mist spray. Some say they are self cleaning but that is just not true.

Next get rid of that stupid bov and go back to the factory one. On standard boost the factory one is more than capable.

It can't be coils because they only ever fail at higher rpm.

If all this doesn't fix it you need to start talking to a Mechanic.

Neil.

[JimX]

Neil, I thought 1.1 was good for standard cars but 0.8 for modded? :confused: Also, the factory bov is more than capable, but so is the turbo smart one. So why bother wasting time and effort pulling something off that already works properly?

[Boj]

Sir33-I had a similar issue but my car struggled from 4000rpm onwards, I changed spark plugs and gapped them to .8 but it didn't fix my problem.I then took it to a workshop and they fixed it.The guy on the counter said that it was my spark plugs and that the mechanic re-gapped them.I tried to find out at what gap he set them but the mechanic wasn't around.Car is going unreal now.

[Neil]

Neil, I thought 1.1 was good for standard cars but 0.8 for modded? :confused: Also, the factory bov is more than capable, but so is the turbo smart one. So why bother wasting time and effort pulling something off that already works properly?

Jimx sorry,,,Yes I got it around the wrong way. 1.1 for stock and .8 for the big boost boys. The reason I want him to go back to the factory bov is to see what happens. Maybe the Turbo-smart one he's using is faulty, Wouldn't be the 1st time a product straight out of the box was stuffed.

Neil.

[hooligan]

boj, where u get this done?

i have the same prob.. same mods but hks ssqv.

i was told best to get a aftermarket ecu like power fc or safc and it'll fix the prob.

[Boj]

boj, where u get this done?

i have the same prob.. same mods but hks ssqv.

i was told best to get a  aftermarket ecu like power fc or safc and it'll fix the prob.

Hooligan-I went and saw the guys at JustJap at Kirrawee.Worth getting it checked out before you splurge some money on something that might not fix your problem.