cat007

300rwkw was one of the requirements.

'Fast' wasn't part of the brief.

I would say the sweet spot is 300/350rwkw with 98/E85. Any more than this and you start to need things like a bigger turbo (unless you're running one of the larger BA/F6 3582's? Is that the right number?), possibly a bigger downpipe/dump and cat back system. 300/350rwkw (98/E85) really only requires: In tank fuel pump Injectors Intercooler High flow cat Valve springs Tune

Sounds like a vacuum leak? Doesn't sound like turbo and doesn't change with revs.

I was trying to make it look like an OEM engine bay. So I was ok with how it turned out. Or you could just get an atmo BOV and not worry about recirc.

Run it around the back to the intake pipe. Hardly see it.

Think the exhaust is the least of our concerns....

Haha I'm the same lol

I think that's the point. Cold and the official recommendation is the same thing. Just means not 'operating temperature'.

Could be as much as 300ml difference in volume from cold vs hot. IIRC when I replaced my fluid, it was about 5.5L to fill it according to spec. Don't quote me on that. But 4.5L seems too little...

Ok so 35C is on the high side - BUT - it does need to be hotter than 'cold'. 30-35C is the recommendation from ZF..... https://aftermarket.zf.com/go/en/aftermarket-portal/passenger-cars-and-lcv/know-how/useful-tips/transmission-oil-change/# "It must be between 30°C and 35°C max. (6HP) or 40°C max. (8HP). Allow the engine to warm up or cool down to regulate the oil temperature."

Ok so there is a VERY specific process to follow when filling the trans fluid to the correct level. Did you follow it? Or just bung it in without getting the temp exactly what it's supposed to be? I.e. Operating temp is too hot. Trans fluid needs to be only at 35C!

When does it occur? Only when giving it 'the beans'? Or does just cruising around cause the error to pop up?

You removed just the control module? Or did you take the solenoids etc out of the trans as well?

I didn't get a chance to try any second gear launches this weekend just gone (fun day for the Night Speed Drag Wars series I competed in) but was able to get some pretty consistent times. Managed 3 back to back 11.5**'s all at around 121.**MPH. Best was 11.515 @ 121.46MPH with 60' of 1.786. Fastest MPH on the day was 122.22. Feels like the stock 122k old suspension might be letting me down on the launch - although the wheelspin is what probably what saves my driveline haha Had the Mrs drive my XR6T while I drove her XR8 - side by side - epic fun watching your car cruise past with your mrs at the wheel and with your foot WELDED to the floor! She ran an 11.7 in mine and I did a 12.4 in hers. Also went for a ride in her dads GT and with me as passenger he did a 10.4 - serious full trim street car that one!

Perfect. The LPG plugs are the same as the turbo ones, they just come pre-gapped at 0.7mm.

What gap are you running? I'm running OEM 0.7mm I think from an LPG motor.

And what is that above it!!?? FGX XR6T is almost 90KG lighter on the nose than the XR8!

I wonder how accurate the roll a dyno's of 8 years ago are compared to today's? @JETURBO out of curiosity, were you able to do a comparison on the same vehicles between your roller Dyno and the hub Dyno?

Are you roller or hub?

Please do!

Brilliant post - thanks! Haha love those sorts of meetings (sometimes). Very interesting seeing those slips and how the cars perform - especially the 11.29 @ 128.75 - the 60' was terrible @ 2.002 yet the MPH is getting up there! I wouldn't be surprised if that's a 10 second et if he can get that 60' down to a 1.7** That 10.88 must have struggled to get moving as well - that MPH should be a LOW 10! I know it's a different beast altogether, but there's a 2010 GT that runs low (10.3) to mid (10.6) 10's @ 128-130MPH at my track. So I'm surprised to see that the 10.88 above wasn't much lower! Guess traction might have been an issue? Found my fastest slip from 17th Jan 2021 - unfortunately it's faded so hard to see and doesn't photograph very well but it reads: (if in doubt - time is here..... NSDW quals - car 043) 60'...1.755 330'...4.884 1/8...7.445 MPH...96.73 1000...9.653 1/4...11.518 MPH...121.31 Most of my passes regardless of an 11.5 or a 12.2 - all trap around the 120-121MPH range. I've got a couple of dozen of them over the whole season. I'm pretty confident that the 346.8rwkw that she pulled on the dyno was accurate. She did 5 or more full pulls (fairly back to back too) on the dyno and each time was around the same power - maybe a 1-2rwkw in it. My rear tyres were shredded by the time we were done - was on a roller dyno - not hub.

Lol I know who he is and well aware of his credentials. I am just yet to find a 300rwkw full trim falcon that can run times/mph similar to what he is suggesting. Happy to be corrected with slips!

Lovely. Perhaps a built driveline and full noise launch might get a 300rwkw Falcon down to a low 1.6, high 1.5 60' - but if we're talking about that sort of mods, they're generally more than 300rwkw so not very comparable. Again, feel free to share time slips.

Mate those are very happy figures and would love to see time slips with those claims! My pics attached. This is what a genuine 350rwkw (ok so 346.8rwkw) E85 burning, full weight FGX does. You're a bit off on your kW to mph figures from what I've seen an experienced. There's a few ~480kw full weight 8's over here that are running mid to low 10's and they're 130-133mph. I don't see how a Barra with ~80kw less could keep up?