Jump to content
SAU Community

Weird Power Loss/gain

Sammy34

By Sammy34,
in Engines & Forced Induction

 Share

Recommended Posts

Sammy34 Community Regular

Sammy34

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.

Link to comment
https://www.sau.com.au/forums/topic/246879-weird-power-lossgain/
Share on other sites
lanky71 Veteran

lanky71

Posted
Posted

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

Posted
  • Author
Posted
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

Posted
  • Author
Posted
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

Posted
  • Author
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.

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.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • DraftySquash
      R34 GTT Central Locking Pains

      By DraftySquash · Posted

      Speaking of diverting threads, my second ever NISMO purchase…. I think they look pretty classy and just wanted to share 😅   PS: 1st was the oil drain plug 😂  
    • GTSBoy
      Need AC Compressor for R32

      By GTSBoy · Posted

      R12 has not been not available for....decades now. Propane is not a great replacement. (I mean, it's a great replacement, but it is a bit too flammable). R134a being the only way to go forward with an R12 system. The design pressures etc, are close enough to R12's to work. The ability to move heat around is close enough to R12's to work.
    • soviet_merlin
      Need AC Compressor for R32

      By soviet_merlin · Posted

      Out of curiosity, what's the reason for converting? I think @R3N3 might have the Frenchy's kit in the R33? I somehow think of you as the ambassador for realistic and clean street-driven setups nowadays  
    • V35_Paul
      V35 Overheat + Coolant Boil & Overflow + Engine not Starting

      By V35_Paul · Posted

      careful when running the car after a boil over. Ive heard you can lose enough coolant that it won't show the right temps because of too much air in the system (or something like that). Make sure the levels are good before trying again.  Maybe a mobile mechanic can come have a look with their scan tool ?
    • GTSBoy
      Need AC Compressor for R32

      By GTSBoy · Posted

      OK, just for some extra clarity - there is more than one option at Frenchy's. 1. You can buy the whole kit - with or without the actual compressor. The whole kit includes mounts, hoses, condensor, etc. That's either ~$2200 or ~$2800. No surgery required with this option. 2. You can buy just the bracket (~$600), or the bracket with the compressor (~$1200). Either of this or the above option "without the compressor" is if you already have an Echo comp or you are able to source one locally. Whatever the case, in this option, you will need surgery done on your hoses to adapt to the new compressor. When I said "the Frenchy's kit", I meant the whole kit in option 1. It is obviously somewhat more $$ than a $1500 OEM compressor. But if I had to spend $1500 on an OEM compressor, I would certainly consider spending double that to renew and significantly update everything forward of the firewall. Another option is to rebuild your original compressor. My R34 comp is currently dead and I will be most likely doing that to it if the spare one in the shed is also leaky.
×
×
  • Create New...