Romulus

Dyno Dynamics dyno's are Dyno Dynamic dyno's, right? I don't own one, so I'm not qualified to comment on the different shootout modes. But I will add this - I've seen bugger all difference in power between shootout and non shootout mode with my car. The power runs weren't planned - I just stopped by to see a mate and he wanted to run the car up. What is relevant is the 3 power runs done in succession between the stock boost, 10psi boost and 12psi boost programs, within 15 minutes of each other, allowing 4 minutes between runs to reflash the PCM. Great results IMO.

Intercooler update: Took the car to have the clutch fitted today, then ran it across to PSI Performance in Wangara to do some preliminary testing on the car. Results as per attached dyno sheets. I made a point of having the AFR's printed on the dyno runs for those that are interested. With the stock intercooler the car made a base of 209rwkw, now the base is 228rwkw. That's a 19rwkw gain with the intercooler only. 10psi program made 255rwkw. Running 12 psi boost, with the bigger injectors and the Street Tuner Intercooler (stock exhaust, valve springs, intake box, stock manifolding) the car has now made 288rwkw. I initially thought one of the flash tunes was a 15psi tune, alas it turned out to be only 12psi. There's more power to be had in both the 10 and 12 psi programs by getting the AFR's to around 11.6:1, and adding a little more fuel where the run starts. That's something that will be addressed next week. Next week the SMB 4" dump pipe and 4" cat will be installed, and car retuned to see what results can be expected. I'm afraid to say I may reach the limit of the engines internals with the mods I've done running 1 bar boost pressure Time to start planning for valve springs, conrods and pistons

Found an old dyno graphs of mine making 264.8rwkw on 10psi with bigger injectors, stock intercooler, exhaust and intake. The way the power ramps up is totally different to the other XR6T dyno sheet.

Boost and AFR's would be really useful to see as well Is it making 278rwkw on 8psi or 18psi? Is it running a safe AFR of 11.5 - 11.8 or it running mid - high 12's? Tend to agree with you Jordak, power seems to ramp up a little slow compared to others I've seen. XR6T's tent to really ramp the power up hard and fast from 3000rpm.

Doubtful the stock injectors can support that power output.

I saw your car on that cruise. It's the one with the painted stock intercooler, right? Mine was the white one parked opposite yours at the Carousel meet point.

Good question, and one I have been trying to find an answer for as well. Before I spend $700 + on the boost pipes (such as the pipes offered by DiFillipo) I want to know when the stock piping becomes a restriction. Anyone running 300+ rwkw with the stock piping? <{POST_SNAPBACK}> M6 XR6T, Seems as though no one knows. Anyway what are these boost pipes that you talk of? Do they replace the stock units or something, and $700 sounds a bit exy! Brett. <{POST_SNAPBACK}> D & T in Wangara sell DiFillipo HPC coated pipes. They replace the inlet pipe running from the airbox to the inlet of the turbo compressor and the charge pipe running from the outlet of the intercooler to the throttle body. Having spoken to a few mechanics I know I'm having custom stainless steel pipes made at a fraction of the cost.

I think more to the point anyone would struggle to find a bad tuner in Perth. The market is too small for a bad company to survive.

FPT / D & T in Wangara do mine. There will be another company coming on board soon as well, with plenty of experience doing turboed work, specialising in Motec, Wolf, Autronic, EMS, and is an APS agent for the WRX stuff too.

Good question, and one I have been trying to find an answer for as well. Before I spend $700 + on the boost pipes (such as the pipes offered by DiFillipo) I want to know when the stock piping becomes a restriction. Anyone running 300+ rwkw with the stock piping?

I agree. I've got 250rwkw with stock injectors, but I do have an auxillary fuel pump. With injectors, I'd want 300 if I had injectors in. <{POST_SNAPBACK}> Me too. Mine pulled 260rwkw stock as a rock with a 10psi custom tune. I'd be expecting 300rwkw minimum with 12-14psi, good exhaust incl dump pipe and cat, bigger fmic and 2nd CAI.

A $220 clutch being able to cope with 40% extra torque doesn't sound reasuring. The factory clutch only just copes with the stock power output - try flat shifting a couple of times and observe how spongy the clutch becomes. My car used to chip 1-2 gearshift - that stopped after less that a week of driving it. I'd rather pay for something that will cope with 100% more torque loading, even if I never achieve that kind of power output. By the end of this week I'll know how well I've spent my money.

The results are so good the clutch is stuffed

Yes, it is off centre, (but not crooked, camera doesn't do the pic any justice) but that is due to the A/C condensor pipes being in the way. As the core is thick it cannot be mounted central to the car - but neither is it meant to. The offset is more pronounced than the the factory intercooler (which is also off centre) as this one is larger and not painted. Personally, I don't think it looks much different to the F6 installation. It took me around 5 hours to install, but to do it again it would take half the time.

Some more pics of the intercooler.... Haven't been able to dyno the car yet as the clutch has let go - I'm having to potter the car around with the stock program until it arrives next week. I've ordered the SMB 4" dump pipe and SMB 4" cat, so I'll have that fitted shortly then dyno the car with the 6 psi program, 10psi program and the 15psi program.

After making a few calls have been able to get the clutch for $1310, plus freight and GST. Clutch kit as per my previous post. Should have it installed and fitted end of next week

Much better now after the tune. Sits dead flat on 12.5-12.6 AFR on WOT. Fuel economy has improved 10 fold. ~allen <{POST_SNAPBACK}> Wow, some would argue that is lean for a turbo. 11.5 - 11.8 seems to be a safer AFR from what I've seen most cars tuned at. 12.5 - 12.6 is n/a AFR's.

I guess that's the price to pay for having a strong gearbox. Mine's a little noisy at idle, but I'd rather put up with a bit of noise and have a strong gearbox than one that fails. LS1 Commodores suffer from the same problem as well but the noise is never an issue. Probably less noticeable due to the lifter noise they suffer from

Called Mal Wood today. The clutch setup I'm getting is costing around $1900, including clutch plate, pressure plate and flywheel, plus fitting. It's the biggest single plate available, next option would be the twin plate, but that doesn't appeal to me. Big bickies, but worth it I guess. Stock clutch is now slipping over 10 psi so I've reverted to the stock tune until the clutch arrives.

Now suffering the same problem as Maxpower. Will the Mel Wood unit fit the the MkII 6 speed?

No. I can only speak of my experience of Martin's unit. I'm happy with it's performance compared to the stock unit. Let's just say the clutch is now stuffed thanks to the extra midrange torque. I too would be interested to have feedback of someone who has tried both units on the same car back to back. None of this trying two different units on two different cars and then saying one is better than the other.

And here's me thinking this is a Street Tuner topic posted in the CAPA section about an intercooler he's marketing...... What's next, a post about Supercheap intercoolers?

Good to see so many options becoming available. Is it a straight bolt in unit like this one? I Cant see the mounting brackets on the I/C you've shown.

Yeah, I'll be in too

Pics as promised. I'll try to take one of the front of the car and post this evening.