Just wondering if anyone knows what the best tuning set up for a L67 supercharger on a 3.8 VS would be?
Due to upgrading to 10psi soon and may go up, I want to explore what other set ups including memcals or custom comp setups with performance and costs.
This would allow a clear indication what true potential L67 owners can achieve.
I have been told it is better to get a custom comp setup (MSD etc.) which can be programmable (NVROM). I believe something like that will allow a tuning/performance shop to alter all considered ratio's to allow the engine and S/C with custom exhaust setup/diff ratios and rocker setup to work in unison, giving good results, the price is b/w 1500 - 2000 inc setup/program and dyno I beleive.
sign up to l67tourque.com , some of the super6's on there are just bullsh!t, so quick. they've all done mod's galore and could point ya in the right direction.
VT and later PCM's (excluding L67 PCM's which still run memcal's) are also tunable, but there is no memcal, which means the tune is 'flashed' straight into the memory of the PCM.
Mods I have done include extractors, 10psi pulley, custom intake pipe and manual trans. The tune for disabling the auto trans parts of the tune where done via mail, by a member on this forum.
Last edited by wamboin23; 04-07-2010 at 10:15 AM.
Oh right that makes sence but why did you disable the auto trans also do the memcals store the memory for the Maff or maffles tune?
the memcal holds all the programming for running the engine, the PCM itself controls the engine based on the info that is stored on the memcal. So, yes, if you get a MAFless tune, the tune is burnt to the memcal.
I got sealth w2a cooler, 73mm pulley, 69mm tb, 1.95 yt rr, 3.46lsd, stage 2 shift kit and corvette servos, custom cai with 3" pod, extraxtors with twin 2.5" exh and a custom 3 bar kalmaker tune in the factory computer. Runs beautiful !!! Next step is a cam and retune
Nice what power u pushing??
Where'd u get the kalmaker tune from and how much is it?
What are corvette servos never heard?
What u spend on all that?
Corvette servos are in my auto, they help with faster shifts.
And I not sure wat I have spent so far on the car because I got big stereo in it aswell and I have done most of the mechanical work myself to save some $$$. And to tell the truth I dont wanna know the total cost of it all otherwise I might stop modifying it hahaha
kalmaker is a program only i think that allows you to tune the factory ecu to suit any mods you have. The factory ecu is a very gd ecu by any standards just trying to find someone that knows how to tune it is the hard part.
If all you going to do is rockers and exhaust than you wont need a tune. youll even be able to put a 10psi kit on without a tune, and a w2a cooler aswell but a a2a cooler and any further mods and youll need a tune!!
If you close to Melb give Scotty a call at Chip Control and he will tune it for you. He has done heaps of these L67 and he is one of the best for the job..
Well my L67 S/C is still making a racket in the engine bay like something shaking (Sounds like the S/C), but could be the tensioner or a coupler, and it is making a sreech/squeel when the belts have not warmed up in the morning (it is continious).
I have to address some of these major issues I guess because the slipping may result in loss of power, and I still have my stock 5psi pulley on. Once I do some mods ill give scotty a call.
What has given you the best results, I am tossing up exhaust/extractor.. pulley upgrade.. rockers... etc. what to do first.
Still want to fix these issues, once I make the car run right, I want to cosmetically upgrade (Tint, Lower, Get a Full White Re-coat (happening soon), Caprice Grille), then I'll performance it.
Well i would start with 10 psi pulley upgrade and rockers. Than a cat back exh and diff gears, extractors will make the car looud!! but will also give you a gain in hp But if you got some money handy just get a intercooler and more boost straight up with the rockers and full exh lol. The cooler will allow you to run more than 10psi. If you only do 10 psi upgrade and rockers you wont need a tune.. the ecu will adapt no problems.
exactly what will the rockers do?
will they change my fuel consumption dramatically?
what do they do that makes the car and s/c run so much better?
"I have 3.45 diff gears LSD already has made a difference to the standard" I was thinking full twin 2.5" exhaust with pacies.
Possibly a cooler for later on i was thinking (and told) intermediate cooler from mace, then get scotty to have a look it at i reakon.
rockers just let it breath easyer. dunno about fuel consumption, wouldnt affect it i doubt, should make it better,
and there ment to make a fair difference in power , so i've been told. thats my next job i'll be doing.
High ratio 1:8.1 and 1:9.1 does, I understand there is a specification difference, but I need a actual explanation what difference it makes in pro's and con's.
theres pretty detailed info on the mace website, or on his ebay web site i think.
or can serch on here for mace roller rockers, think hes got a thread going about them.
The rockers wont change your fuel consumption. All they do is open the valves a little more to help the air in and out of the motor creating less resistance and easier flow which equal more hp. If you drive the car normally than the fuel consuption will be gd but start to get into it a bit and the fuel gauge drops lol. The rockers wont hurt your engine at all. And it wont make that much differnce in the end if you get the higher or lower ratio rockers because they make cams now to suit. That is my next step a low lift cam to suit my 1.95 yt rr
I see that makes alot more sense I been looking ay mace 1.9:8 rr what made u go yt?
A cam I think is too far for me to think I want to get all my mods leaving the engine unopened before I start spending big on forgies or stroking or camming
I guess a cam will give you alot more tourqe tho and work well with the rockers and s/c. Are you going for a lumpy sound or ??
I haven't seen many l67 tho with a cam change to specific ratio it must make a diff
what power are you expecting to come out of ur car approx (gains)? Tuned as well...
Well i have had the yt ones for ages, i hadnt heard of mace wen i bought them. If i get the low loift cam to suit me rockers it wont have a lumpy idle but will gain about 50rwhp, and yes it will be retuned to suit the cam. The low lift cam hasnt got that much more lift than the standard 1 (because it is meant to be used on stock heads) but the duration on it is a fair bit more!! If you wont something that will be nice and lumpy youll have to get a bigger cam which will require some work to be done on the heads which cost a fair bit of money, and unless your aiming for lots of hp i dont see the point. At the moment I cant decide if i want to save for a cam or just give up and save money for another toy to add to the collection lol
I want to do 10PSI, Exhaust and Extractor and possibly rocker but I probobly won't go into a tune and cooler for now, I mean with all the work you've done sounds like 5k+ more, and the last thing I want is to reach 200rwkw and go I need 6k for a whipple and 4k to do my bottom end. I am happy with content power for now anyways.
ok no worries mate. There are a fair few people on l67torque that are pushing 200rwkw with stock bottom end.And I have spent a fair bit more than 5k onit but it is hell fun to drive lol.
Gotta hate when everyones in your ear with an 8 (VE8 or BF pursuit or a xr6 turbo, re-itterating "there is no use" to playing with it.