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Weird Power Loss/gain

Sammy34

By Sammy34,
in Engines & Forced Induction

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Sammy34 Community Regular

Sammy34

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My r34 gtt auto seems to have moments of unreal power and then moments latter the car feels guttless. car has basics like exhaust. fmic, apexi avcr and apexi pod. The cars been looked over by godzilla motorsports and gave gave the thumbs up for the engine in perfect working order. Just feels like the car has been very tempremental recently.

I've also been notified that it may be caused by the avcr due it being a self learning EBC. Any other thoughts on what it may be would be greatly appreciated.

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lanky71 Veteran

lanky71

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i have to admit that occasionally my car does the same and its a auto r34 gtt.

I think it has to do with the standard ecu as it mainly happens when i "miss" the optimum shift. It thinks i am driving one way then suddenly i change so it doesn't adapt... does that make sense to anyone?

Sammy34 Community Regular

Sammy34

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i have to admit that occasionally my car does the same and its a auto r34 gtt.

I think it has to do with the standard ecu as it mainly happens when i "miss" the optimum shift. It thinks i am driving one way then suddenly i change so it doesn't adapt... does that make sense to anyone?

Yeh I find my car performs far better when im not using the sequential gear box. Im interested in just getting a stand alone ecu and getting rid of the sequential all together, if it can be done that is, without too much screwing around. I wonder if I just get a stand alone ECU like a vipec and plug straight in, if it will be fine but just unable to use the sequential. Anyone know???

STATUS Grand Master

STATUS

Posted
Posted
My r34 gtt auto seems to have moments of unreal power and then moments latter the car feels guttless. car has basics like exhaust. fmic, apexi avcr and apexi pod. The cars been looked over by godzilla motorsports and gave gave the thumbs up for the engine in perfect working order. Just feels like the car has been very tempremental recently.

I've also been notified that it may be caused by the avcr due it being a self learning EBC. Any other thoughts on what it may be would be greatly appreciated.

What ecu? there a quite a few R34 GTT's that come in with this issue and it is usually timing related... (with remaps, unichip and emanages etc)

Another common isse is the wastegate all very easy to fix

Sammy34 Community Regular

Sammy34

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What ecu? there a quite a few R34 GTT's that come in with this issue and it is usually timing related... (with remaps, unichip and emanages etc)

Another common isse is the wastegate all very easy to fix

standard ECU but ima bout to have a vipec installed. There running the standard ecu for the gearbox and the vipec as a stand alone for the engine etc, so im guesing im still gana have the problem... could always have the quick shift setup installed but just looks like a big hastle to drive for a daily driver.

666DAN Grand Master

666DAN

Posted
Posted

I'm betting timing related as well.

What's your opinion Trent? I've seen it in my car due to a knock sensor that was overly sensitive (even at idle) What other triggers have you seen to get similar timing fluctuations?

Sam I'd look at a ROM tune, you're paying a stupid amount of money there to run a yet untested piggy-back setup of the R34 shift logic.

Sammy34 Community Regular

Sammy34

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I'm betting timing related as well.

What's your opinion Trent? I've seen it in my car due to a knock sensor that was overly sensitive (even at idle) What other triggers have you seen to get similar timing fluctuations?

Sam I'd look at a ROM tune, you're paying a stupid amount of money there to run a yet untested piggy-back setup of the R34 shift logic.

Yeh I mean I've considered alot of different options recently computer wise. And had some fairly good conversations with mark down at godzilla performance. As much as I want to take a cheap option out and go with a piggy back or nistune or something (not that its a bad option) Im extremely interested in seeing how this will work out. Plus im just about to invest in a stage 2 shift kit with the manual valve body installed, so i dare say the standard computer wont be piggybacking the shift logic for long.

second of all im sick of my god damn avcr self learning shit. Much prefer the vipec setup with the single missile switch for low and high boost. I may be wrong but the vipec sounds like a far better option for now and down the track than running an emanage that will cost me an upfront 2g anyways.

Apparently the emanage dont come with straight plug ins for the ER34 needs to have a custom fit done with the harness.

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