The Camaro Club (UK)

OK yeah you can see g/cyl and g/sec changing, though that assumes fueling is 100% correlated to your wideband and airflow models, otherwise the logged values will be wrong.

I run mafless as a matter of course, Ive never run a maf in my various LS setups for years. Mainly because the choice of intake is wider. I still have the maf in place until I can swap it with a piece of pipe etc, however its disabled in the tune.

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1999 Z28 Camaro TT, A4, Borla, BBK, LS6, Comp LSR, Efilive COS5 - 2007 VXR8 Darton, Comp, Callies, Diamond, DiFilippo

Chasing a low rpm stumble down, looks like sticky IAC or even dodgy plug wires or similar. Bit of a pain.
In the interim added the final touches by ordering bilstein shocks and UMI sway bars to collect in March.

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1999 Z28 Camaro TT, A4, Borla, BBK, LS6, Comp LSR, Efilive COS5 - 2007 VXR8 Darton, Comp, Callies, Diamond, DiFilippo

wow, not been here to check up in a while.

So your on the final tuning touches. Got mine in COS3 now. Love the rpm vs map fueling and temp multipler being separate
All running SD in the semi open loop state as set most of fueling to 14.63. Gonna lean out under light loads

Got the idle down to 850 nice and stable with MAP ~ 52 Kpa with the 228/228 @ 0.05"lift 0.588/0.588" cam. Just pushes on brakes a bit with stock stall.

Be interesting for us all to sort a dyno day, I have loads of different timing set ups I want to test. And be nice to see how your ported 853 do agains my stock ls2 253s

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'99 Z28 A4, 253 LS2 heads, 228R TSP cam, Patriol Dual Springs, Double roller timing chain, LS6 ported oil pump, OBX LTs, 3" True Duals, LS6 intake, 42lb/hr injectors, SLP lid + bellow, EFIlive COS 3 Speed Denisty Tune (self tuned), 3200 Circle D stall, CAI mod, KYB AGXs, Eibach Pro Front Springs, UMI panhard, LCA + Brackets, Strut Brace, Custom Subframe connectors, WS6 axle with 3.42s, 18" American Racing Rebels, US mirrors, 93 tail lights, 3.5 inch custom cowl hood. Mickey T's Street DRs on Vette-ZR1 wheels for the strip !
Best ET: 12.0 @ 116 mph (on a 0-60ft of 1.8 s)

Indeed mate, good plan. Derek might want to come by as well. He has exactly the same model as me.
Ive been driving the vxr8 recently. Im going to attack the Z28 this weekend.
I have 150 miles a day driving to do, so its ideal for logging and tweaking etc.
So I just need to sort the missing out and all will be well.
When it runs without missing its pretty good, it just randomly stumbles...

Oh also got some sway bars and bilstein shocks for it...! Plus a roadrunner ECU! So you are welcome to borrow it for the dyno... if/when we get there..

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1999 Z28 Camaro TT, A4, Borla, BBK, LS6, Comp LSR, Efilive COS5 - 2007 VXR8 Darton, Comp, Callies, Diamond, DiFilippo

thanks for the offer, camaro off the road at the moment. New gearbox to put in and a stall, will be swapping axle back to highways and setting up 3.42 in current axle.

Just been reading your post on the MAP vs RPM fueling table on efi live, are you still having issues. I've not had chance to drive mine about much since the COS 3 change but havent seen any problems yet.

btw, how do you get COS5 on the camaro, though COS 3 was best upgrade for that PCM, what am I missing heheh ?

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'99 Z28 A4, 253 LS2 heads, 228R TSP cam, Patriol Dual Springs, Double roller timing chain, LS6 ported oil pump, OBX LTs, 3" True Duals, LS6 intake, 42lb/hr injectors, SLP lid + bellow, EFIlive COS 3 Speed Denisty Tune (self tuned), 3200 Circle D stall, CAI mod, KYB AGXs, Eibach Pro Front Springs, UMI panhard, LCA + Brackets, Strut Brace, Custom Subframe connectors, WS6 axle with 3.42s, 18" American Racing Rebels, US mirrors, 93 tail lights, 3.5 inch custom cowl hood. Mickey T's Street DRs on Vette-ZR1 wheels for the strip !
Best ET: 12.0 @ 116 mph (on a 0-60ft of 1.8 s)

There is definitely a bug in COS3 and 5 when using lean cruise and fully commanded MAP AFR feature.
I gave up the fully commanded to keep lean cruise.

You can run COS5 or COS3 with the lean cruise patches and dynamic fueling.
Let me know if you are interested I can email you an 02 custom OS with lean cruise and all the bells and whistles set up for LS6 intake and injectors..
Actually I think I even have one for the lS1 intake and injectors.

You will want to paste across some of your tune info like VE table and some of the idle cells.
Or you can just patch your own on up with the custom CAX files.

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1999 Z28 Camaro TT, A4, Borla, BBK, LS6, Comp LSR, Efilive COS5 - 2007 VXR8 Darton, Comp, Callies, Diamond, DiFilippo

Pics after some cleaning and fitting a set of C5 rims.

285x18 rears and 245x17 fronts.

Plug and play.. well a 1cm spacer for the rear. Still goes sideways though..

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1999 Z28 Camaro TT, A4, Borla, BBK, LS6, Comp LSR, Efilive COS5 - 2007 VXR8 Darton, Comp, Callies, Diamond, DiFilippo

well im off to states next week and ill pick up my stall, just gone with a 3200 one at $395

Im gonna go the long way around about the install though. Gonna put the replacment gearbox in first with the stock stall to check all is ok, before putting the new one in. This i'll convert to highways then too so I can set up my other axle. Might just get summit/rock auto to ship bearings etc to UK, my second case is already full with the stall.

I'll let you know how I get on with tune but prob wont be till after april. Australia trip in mid april too.

I might be down at the test and tune day at pod at start of april, been tuning al plat's race camaro. So will be messing with that

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'99 Z28 A4, 253 LS2 heads, 228R TSP cam, Patriol Dual Springs, Double roller timing chain, LS6 ported oil pump, OBX LTs, 3" True Duals, LS6 intake, 42lb/hr injectors, SLP lid + bellow, EFIlive COS 3 Speed Denisty Tune (self tuned), 3200 Circle D stall, CAI mod, KYB AGXs, Eibach Pro Front Springs, UMI panhard, LCA + Brackets, Strut Brace, Custom Subframe connectors, WS6 axle with 3.42s, 18" American Racing Rebels, US mirrors, 93 tail lights, 3.5 inch custom cowl hood. Mickey T's Street DRs on Vette-ZR1 wheels for the strip !
Best ET: 12.0 @ 116 mph (on a 0-60ft of 1.8 s)

Ah that sounds like the circle-D stall I was looking to get.
Let me know how it goes. I was going to run it with the 2.7 gearset.
But probably head on up to 3.24 ot 3.42 at some point.

Waiting at the airport in Montreal at the moment with oil filter and fuel filter in my carry on and sway bars and shocks in the check in baggage

Almost done with the mods.

Just need a 4" 90mm pipe to get my SLP lid installed in mafless format.

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1999 Z28 Camaro TT, A4, Borla, BBK, LS6, Comp LSR, Efilive COS5 - 2007 VXR8 Darton, Comp, Callies, Diamond, DiFilippo

Suspension bits getting dropped for fitting tomorrow

.. I see a stall in my future, then depending... gears..

After that, done.

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1999 Z28 Camaro TT, A4, Borla, BBK, LS6, Comp LSR, Efilive COS5 - 2007 VXR8 Darton, Comp, Callies, Diamond, DiFilippo