Never tuned for a cam before, 233-243 655 660 118lsa lmr cam, currently have long tubes,off road xpipe, b&b exhaust, v3si blower and alkey meth, i installed dod delete and cam phaser, ls7 lifters, brian tooley pushrods and springs thanks for ur help
Never tuned for a cam before, 233-243 655 660 118lsa lmr cam, currently have long tubes,off road xpipe, b&b exhaust, v3si blower and alkey meth, i installed dod delete and cam phaser, ls7 lifters, brian tooley pushrods and springs thanks for ur help
tune it just like you would a CAI or headers or anything else. make sure you tune your SD tables and don't just shortcut it as a MAF only car.
It's pretty much a requirement in the Gen 5...tq reading won't be correct without dialing in the GMVE table
Soooo.... how well are you guys prepared to map the speed density model? Are you locking the cam at zero and treating it like a GENIV or are you taking multiple layers of GMVE data at various cam angles and using a regression tool (that isn't part of the HPT suite) to solve for the cam angle coefficients?
I'd guess the former
Post a log and tune if you want help
VCM Suite V3+ GETTING STARTED THREADS / HOW TO's
Tuner by night
CPX Tuning
2005 Corvette, M6
ECS 1500 Supercharger
AlkyControl Meth, Monster LT1-S Twin, NT05R's
ID1000's, 220/240, .598/.598, 118 from Cam Motion
2007 Escalade, A6
Stock
maybe on a ford it would be more complicated, which is why everyone only tunes the MAF.....
on my personal GM with VVT, the cam angle retards but is the same at any given load/rpm whether WOT or part throttle.....
for example, it is fully advanced with 0 up to, say, 4000 RPM, across the board, then retards to, say, 3 by 7000 RPM.
there is no retard for EGR at part throttle.
the VVT spark tables are zero'd.
the VVE table is tuned and the MAF is tuned and the spark tables are tuned.
my LTFT are disabled, my STFT are -3 to -5% everywhere all the time.
416ci with blower.....runs good. very smooth, no hiccups.
Thats the $299 street tune special because they most likely trolled around for a file and stuffed it in.......I still think there should be an organization that certifies your a proficient calibration facility and qualified to work on customers $118,000 ZO6's. This would make the customers realize who's on it and who's not. This doesn't mean you need to be a big shop just that you took the steps to be in that group cause you give a crap. Morning rant....
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More like the $500-$600 special up here in my part of NY. I always get a kick out of the guys doing SD calibration work with the bargain basement $18k dyno with no holding or load capability. Another good laugh is the wideband systems they are using to calibrate these $100k cars. You need to have the right tools and right equipment to get the job done correctly
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Don't forget the guy that is trying to do an SD tune and doesn't even have the wideband connected to HPT and are trying to just use the dyno wideband reading...
Do I have all the fancy tools Im sure you do? No. However, When dealing with cam position, I have found it best to start with known good cam position vs rpm. Dial in ve with cam locked to these positions. Now I will move the cam a little to see if there is improvement or not, and if I need to move the cam differently, I will dial the ve in again. This has served me very well. Is the the best way to do it, or the proper way to do it, probably not, but it does give me good, repeatable results. When dealing with large aftermarket cams, we are not really moving them that much, so there tends to be less trial and error vs tuning the stock cams. IF the cam is known to be in this position at this time, under all circumstances, then we can tune it as a 3d ve table. Now if we want egr, dod and other things to still operate, then that is where the 5d model comes in. And having to map for all variables. Now if a customer comes in, and wants it all to operate, I would be glad to do so, however I am pretty sure 999,999 out of 1,000,000 will say never mind when they realize the cost of the man hours involved in actually mapping all of that with an aftermarket cam. Its not that correctly mapping these can't be done, its that the vast majority of customers are not willing to pay for that!!!!!!!
Michael Bray
Rusty Knuckle Garage
Slidell, Louisiana
20yr Master Tech.
Advanced Level Specialist
Custom Car Fabrication, Customization, High Performance.
GM World Class Technician
Shop Owner
I'm not in the business, but while I agree with you that some kind of certification would better serve customers, it would not eliminate possible attitude problem... i.e. a shop or tuner who would profit from the cert, yet still put out snerf tunes.
I hear where you're coming from, in that there seem to be a ton of under qualified people preying on the uninformed.
I wish you the best in keeping ahead of the whack pack, in that you seem to love this stuff and passion is part of what is needed.
steps down from 6" pedestal...
2003 MY Z06 3.3 liter whipple ...sold at around 1000 rwhp
wip 2015 Silverado w/2.9 Whipple (phase 1 completed) phase 2 in the works