Search results

Just been driving it today. Sometimes it hits the rev limiter and pauses, other times it shifts firmly into 2nd whether it's in drive or sport mode. I noticed that when it shifts properly into 2nd it does so at about 5800 rpm. But when it hits the limiter and cuts out it's at approx 6000 rpm. It...

I think mine has firmer shifts in sports and manual mode too, but it's more pronounced in manual mode than sport mode. I really haven't tested it properly for 1st to 2nd shifts in various modes. I have an 80 kph and 100 kph highway near where I live so I will test it. The engine cut out pause...

Don't know why it wasn't tuned that way but may be a reason. Firm shifts in sport mode was what it was originally going to have. I was informed that it's only in manual mode after the tune.

It went lean on the pre-tune dyno run so probably was a 98 file. My fault, it was up to me to make sure it has the correct fuel in it prior to tuning. It would have been been a mix of quarter tank 91 and quarter tank 98. Tuned on half a tank of fuel. Pretty impressive result considering the...

I'll put some 98 in it today!

Wow thanks Ginger beer l will check out the torque calculator. Car feels much better, especially top end 3000 rpm onwards, similar to my old turbo falcon. More responsive at low revs but doesn't feel much more 'torquey' than before. My son was using the car the day before the tune, just found...

Only what he gave me shown above. No particular torque curve printout

Don't know if there was a road test. I assumed there would be but maybe there wasn't.

Quote: tuner will have to lower the gear change rpm and or speed so it can have time to change before it hits the limiter, the more power u make the earlier it has to initiate the shift, at the some time they can firm up the shifts on the sport mode as well Shouldn't these things have already...

Drives nice but there are a few little things: I would have preferred it to have the firmed up shifts in sport mode rather than only manual tip-tronic mode. Sometimes when taking off in first in sport mode (not manual) it hit's the rev limiter and there's a pause before it moves to second gear...

Update: Driven it properly........it's FUN :) Much quicker, will be interesting to see how the fuel economy is with the AFM turned off. It has always sat on 13.9L/100 average (dash readout not measured at the pump). But I didn't really buy the car for fuel economy, so it's more of an academic...

Got it tuned today. It made 260.5 kw and 457.6 Nm torque @5500 rpm, Could not really get a good run before the tune due to it running lean from the VCM otr and 3" Hurricane cat back, made approx 190 to 200ish but no print out. Power increase is good, but torque seems low, but that is at the rear...

I'm now going to leave the 3" Hurricane catback on with the 2.5" rear Zetti sports mufflers. Just been looking at the stock mid pipe out of the car, there are restrictions everywhere. It's getting tuned on Wednesday.

I put the 3" Hurricane mid pipe back on but left the sports mufflers on for now. When I drove it there wasn't as much drone as I remembered from previously, didn't have much more drone than the stock mid pipe. I looked underneath, I had forgotten to tighten the rear muffler flanges to the mid...

I've heard that just a trans tune alone makes a fair difference.

Just firmer shifts than the stock Grandpa tune. But I really like the idea of having Drive as factory then flick to the left for power mode with firmer shifts. At the moment on the stock tune the car basically goes well in 1st then changes to second and just dies off a bit, a firmer/quicker...

That's wicked Geoff, pretty good number for unopened atmo engine. I will just have 3" Hurricane mid section but stock everything else and the VCM OTR then a tune. Hopefully might make 250 rwkw's but as Ginger Beer said it will make what it makes, that isn't as important as the difference between...

The main thing l love about the otr is the sound at wot.

Mine will be pretty much stock with sports rear mufflers or stock with 3" Hurricane back to stock rear ss mufflers to stop drone. So either way probably won't flow as well as yours did so will make less power. But l do have a VCM OTR but so does everyone.

What exhaust?

If I can tune to about 250 - 260 rwkw's I'd be happy for now, it's just the L77 6.0

Bearing in mind I still only have stock manifolds and cats

I like that, it means that maybe my stock rear mufflers will shut this Hurricane droning brute up while giving me better flow than the stock mid pipe when I get it tuned.

I've got 12" x 4" resonators x 4 on this Hurricane 3" mid pipe. It bolts straight up to the stock cats and stock rear mufflers. The drone from this Hurricane 3" mid pipe is unbearable with the Zetti oval rear mufflers, hence it's removal and the use of a stock mid pipe instead. But as I said I...

Mines just an L77 6.0 series one SSV. I am not chasing big power, so perhaps the stock 2.25 mid-pipe will do. I doubt I will be able to get anymore than 260 rwkws with a tune.

After reading some comments on here regarding maximising rear muffler size, I was just wondering what would the result be if I were to re-install my 3" Hurricane mid-pipe (4 resonator type) and install the stock rear SSV mufflers in place of the Zetti sports oval mufflers? Higher overall flow...

I'd be going for a cam at the most later on but for now otr and freer flowing exhaust with tune. I am never going for boost. I have seen shorty headers on Ebay both 1"7/8 and 1"3/4 don't know which as long as they bolt up to stock cats

How about the stock headers and cats?

My car with the 3" hurricane cat back was actually pretty quiet from the outside and rear. But the drone was like doing 100 k's on the highway with one window down, I couldn't hear the radio and it was tiring to drive it. I am getting a tune soon. I just have VCM otr and rear sports mufflers...

"Hopefully my stock VF2 SS mid pipe will bolt up to my new rear Zetti 2.5" mufflers (2.25" to 2.5" hopefully the flange and bolt holes will match up). Should both be twin bolt holes centred 105mm apart." Turns out that the guy who sold me the mid pipe lied about it coming from a VF2-SS. (There...

I am tempted to retain the stock cats and just get shorty headers that will bolt up to them. That way I have better flow from engine with headers and less restriction at the rear with Zetti high flow sports mufflers. Then get a tune (the VCM otr is already fitted) and see how I go.

I guess 200 cell wouldn't be much better

There doesn't seem to be an easy answer other than to leave the stock cats alone and be happy with the power after a tune. What do people with forced induction or Cams do as far as cats go?

Yes my main reservation are the 200 cell cats. I would prefer compliant cats that flow better than stock. Some aftermarket cats do nothing more than a catless set up would.

I like the look of these. They bolt up to the stock mid pipe too, seriously considering getting these! https://www.ebay.com.au/itm/114754956911?mkevt=1&mkpid=0&emsid=e11051.m43.l1123&mkcid=26&ch=osgood&euid=618b51bbca414f62acab4d473d68b255&bu=43230354724&osub=-1%7E1&crd=20220613192635&segname=11051

"Some have used a smaller high flow in line cat fabricating a new header pipe with a significant power gain." Could any decent exhaust shop do this?

I'd imagine the cat set up would always be restrictive. so pacemaker Shortys and some kind of hi flow cat set up should see my L77 ready for a tune!

So 340 headers and cats is what I should be looking for on the used market? Then with the VCM otr (which I already have) I can look at getting a tune? Any aftermarket alternatives that will yield similar results without smelly exhaust or too much noise?

Yes, if you're only interested in OEM headers and cats, but are becoming like rocking horse shite, with prices to match. Maybe you should 'up your budget' and consider performance headers and high flow cats before your tune. Good point. If I can do it while still keeping the car quiet, hence...