cumminsVP2001

It definitely made the throttle touchy, couldn't even take off normal from a stoplight on wet roads without spinning out. It was definitely different when I went to the V2. I actually have to give me then 5% throttle to get going

im pretty sure i get what your saying. Like i said before, hopefully this weekend, or maybe even today or tomorrow if it stops raining ill have some info to bring everyone to fine tune this thing,

i thought it was 19-20. anxious to see all where timing is at at cruise now

i know it has been said in this thread before but what does the smarty set timing at at cruise? i just got the v2 a week ago and before that i always ran smarty on sw9 with my tst pm3 off until i wanted to boogie, then flipped it on. Just DD with my smart it was the same low boost situation.

that makes me feel better. never worried too much about it. I always thought my gauge was off, but now the v2 confirms the same readings. I just thought it would build more boost in normal driving conditions and cruise. my other 2001 (all stock) is at 8-10psi at 60-65mph. Obviously i know thats a much smaller turbo but its also on stock fuel.

thats another question i kind of had. my turbo (from my mechanical gauge and the v2) only show 1-2 psi cruising at 60-70mph. Its not a big turbo by any means and there isnt a boost leak. I can get a 60+psi spike and hold 50-55psi at WOT, but unless you get on it pretty decent it stays around 0-2psi in any dd condition yes its going to take alot of playing around. its either been raining or too stupid hot for me to want to do anything but sit in the AC. hopefully this weekend holds out and i can get some data logging done and report back!

actually just driving around town and even cruising at 65 my psi doesnt get above 5 for the most part. and im still playing with the tune.

im guessing this was directed toward me? this isnt a DD truck or tune. Tuning for purely performance.

thanks for the explanation. have you tried changing from 2000 to 1800 with the same tune and seeing if there was a difference in overall power.

awesome. all my reading paid off somewhat haha. I'll do some testing with this and add in timing as i go. Or i might just add the timing then dial back if needed. thanks for the help! And ive always been a little confused about the pump stretch.... even after several youtube videos and reading i still dont quite understand what it does. I know the higher it is the more torque you produce and in turn more smoke, but if this was the case then why wouldnt all race tunes be set to the max? ive seen 1800-2000 for anyones race tunes. is it similar to smarties levels? In that it powers the same eventually, it just brings the fuel later in the curve the lower the number?

i havent tried this tune out yet, so obviously thats gonna tell me what i need to know, but does anyone see anything wrong with this off the bat? might have to tune down the starting canbus, but it spools great with alot of fuel down low my previous setup i had a smarty on 9 and a tst powermax 3. Power Levels: 6 Timing max load timing offset: 2* Low PSI Timing Reduct: 5* Timing Reduct Scaling: 50% Light Throttle Timing Adv: 3* Light Throttle Timing Load Limit:30% Timing vs rpm 1500: 17 2000:20 2500:24 3000:28 Timing Max:30 Wiretap Pump Stretch:2000 TPS Pump max:100% TPS Pump Min: 0% Minimum Pump Tap Fueling Percentage:20% Pump Low Boost Scale PSI: 5psi Boost Scaling:40psi RPM Limit:3400 Power Reduction: 0 PSI %: 92 1 PSI %: 93 2 PSI %:94 3 PSI %:95 4 PSI %:96 5 PSI %:97 6 PSI %:98 7 PSI %:100 8 PSI %:102 9 PSI %:104 10 PSI %:106 11 PSI %: 108 12 PSI %: 110 13 PSI %:112 14 PSI %:114 15 PSI %:116 16 PSI %:119 18 PSI %:122 20 PSI %:125 22 PSI %:128 24 PSI %:131 26 PSI %:134 28 PSI %:137 30 PSI %:140

ive seen you recommend that to many people and i plan on doing so when i get a chance. That tune is VERY laggy until the turbo lights. This turbo spools almost instant with my previous setup. With this tune i stomped on the pedal and you would of thought i had 30k behind me. Ive been putting together my own "race" tune. This truck is purely a play truck. it gets driven maybe once a week or two and not at all on rainy days or winter time. Any thoughts on the reason why its holding first gear for so long?

first post! ive read through every page on this thread and 50+ pages of various others. I just got my v2 a few days ago and as everyone else, i am learning. I downloaded @Me78569 big injector race tune and for the most part it runs pretty good, but some tweaking can definitely be done. My biggest concern is 1st gear wont shift until 2100-2200 no matter what tps% im at. it has never been like this before. As well as some surging when at low rpm/low throttle in 3-4 gear