Jump to content
SAU Community

Recommended Posts

I would try a different tuner perhaps, nothing like a second opinion...

Do this, looks like a timing hole because he went really safe or something was making it ping at peak torque. If it is a timing due to detonation then try dropping the exhaust and see if it still pings if you add the timing back in.

Basically I would just find another tuner, not saying he is bad, but a second opinion is important, I've gotten one lots of times after seeing good tuners.

Edited by Rolls

there's a massive timing hole and the timing does look quite relaxed, could be some form of exhaust restriction at peak torque.. he's got enough fuel there too at 0.8 lambda.

usually RB motors prefer a flat timing, opposed to SRs 4Gs which love a timing hole.

That is a very average looking timing map, very soft up high and not really (well from memory) that soft down in the low rpm. Put up the fuel map too - that should give a reasonable sign of if there is a restriction.

Only time I've ever had to do anything like that was with a car which had really erratic trigging, and I just put numbers in there to keep the car runnable and as far as possible away from knock while the cause for the triggering issue.

Cheers. Wow, that's not a very nice fuel map - I'm not sure who your tuner is but my confidence is not high that they are on top of everything. The "not nice" about it isn't due to them working around an issue, it looks more like they've just been plugging numbers to try and get the right AFR and power curve on the dyno... whenever you can see what cells the engine runs through on the dyno (look at the yellowish cells amongst the sea of green - full boost in the area of 4000rpm) and then have leaner cells at higher loads, as well as richer cells in the same area. Run that car at any different boost level, or just drive it different to what happened on the dyno and the AFRs would be interesting.

The fuel map looking like that makes it a bit hard to be sure of what to read into it, it'd be easier to tell what was happening if you could trust the numbers are representative of what the engine is doing, but at a glance it doesn't necessarily look like the engine is choking on some restriction - could be an issue with the actual tuning, whether it be the tuner or if there is some issue with the ECU determining crank angle.

looks like on certain columns your tuner has highlighted those cells and press the 'I' key to linearise the map...

Go back into that map and press 'T' for trace, then do a run in 3rd or 2nd (whatever is safe and you're comfortable with) then do a print screen, repeat for the ignition map. This will trace the cells it goes into so we all can have a better understanding of what's going on :)

I'm allmost certain it's tuning now looking at fuel and timing maps. That boost plot backs it up too. I find when tuning if I run too little timing in power i'll get boost creep. What you've posted shows boost starting to rise as the timing drops off, that means most of the energy is being released in the exhaust.

New tuner time.

  • 2 months later...

Wasnt tuner, ended up being restriction causing car to not take timing in that part of the map and if it had timing it would knock. dropped exhaust and everything with nothing changing. Ended up changing turbo to an Op6 r34 highflowed by gcg with 3076 core and made same power and torque on way less boost. And can now take Alot more timing and has smoother curve. So in my personal case it was the turbo that wasn't performing as meant to.

From a couple of GCG's high flows I have seen, They are a trimmed down GT35 turbine with a 76mm comp. That is closer to a 3576.

Replacing the turbocharger made no differences in out come. Means it is still pining if more boost is added.

While the G3 has fixed set of boost level. So it just ended up with less boost and more timing compare to more boost with less timing. With no overall gain.

Regardless, both turbochargers has under performed. The turbocharger is not your problem.

Replacing turbo eliminated the flat spot in the curv and is more efficient on less boost. And makes more power on 20psi than what the g3 made. G3 made 255 on 20 and highflow made 274 on 20. Everything on car is the same the only thing that has changed is the turbo itself. doesn't overboost like the g3 used to either, holds 14 psi flat to redline where the g3 spiked to 22psi then held 20psi and creeps to 24/25psi in higher revvs. Im not dissing your turbo by any means Stao, im just stating that in my personal case it was the turbo that was the problem.

That's ok, I need to know if there is a issues on the actual turbo and sus out any issues on that model.

After the stud fouling against the gate removed was the turbocharger back on dyno again for check ups?

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


  • Similar Content

  • Latest Posts

    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
    • You haven't driven many modern cars then have you? Most of them have sfa steering feel with their stupid electric bullshit steering systems.
×
×
  • Create New...