urdone

iTrader: (1)

Guys I installed the stage 2 cam from TSP on my 14 Silverado, I do my own tuning and I'm new to the vvt cams. I was talking to a guy at the track he was telling me about tuning the vvt, It help him a lot on he's truck. He show me the tables basically they zero out the WOT part of the vvt camshaft tables it was 2 tables.
My truck run the same as it was running with no cam, 😡.
2014 long tubes, cold air intake, 3200 circle d converter and the stage 2 cam. 13.2 the best time on a 1.7 60ft airfuel it's right timing it's around 22*

Just wondering if I zero out my tables would help or i have to know how to calibrate or how they work?? I'm disappoint on this times just spend 2,500 on a cam kit to run the same.

madmann26

iTrader: (7)

Generally, with vvt, you advance the cam on the low end and slowly retard it at upper rpms.

urdone

iTrader: (1)

So trying this would it have a certain point where I can hurt something? This guy just zeronout the table I check my file and the low end was as mine there where not modified.

madmann26

iTrader: (7)

Not at all. I wouldn't go all crazy with it. I'd keep it to within +-10 degrees. I don't know what the max advance/retard is, that's why I say 10 degrees.

madmann26

iTrader: (7)

Zero'ing it out usually means the tuner is making up for it in the main spark table somewhere.

urdone

iTrader: (1)

So the only way knowing where the truck gain power it's at a dyno or test it at the track??
I can start with half the table and try it out and fork there on see what it likes?

madmann26

iTrader: (7)

That's right. Track or dyno. Your theory is sound. Make little changes at a time.

turboal1

Mine is set so i have the max adv it can take at low end
for good hole shots, and street driving. then retards at hi rpm's
for good top end power. gives pretty good gas mpg also.
dyno tuned.

smokeshow

iTrader: (16)

You can't get away with touching just two tables. The phase angle itself is dependent on a number of variables outside of RPM, such as accelerator pedal position, barometric pressure, coolant temp, oil temp, and likely a slew of other things. Once its got the desired cam phase angle, then the actual cam position values are fed into the equation that calculates the virtual VE. The coefficients of that equation must be calibrated as well. All of this then feeds into spark advance determination. I'm curious why TSP doesn't provide some sort of 'base tune' values for these camshafts. It takes a lot of time and effort to make one of these things run to its potential.

urdone

iTrader: (1)

Thanks for your advice.
What compsny or who sells camshafts for this trucks and provide a base tune? I ask Texas speed for the WOT vvt tuning base Tune and they they do provide but never got it, after I got te cam kit I called to ask and they just say ask your tuner. 😑