SSi 93 TRex tune, 1st 24 hrs
#21
lol.... yup.
Apologies for the delay!!!
Apologies for the delay!!!
#23
Senior Member/Vietnam Vet
My previous favorite was the T4 Snow & Ice tune for the gentle, smooth throttle and great power at mid-throttle. However, the T-Rex Junior tune far exceeds in smooth driving pleasure.
#24
Senior Member/Vietnam Vet
I had only driven the SSI 87 T-Rex Jr for a couple of days, before trying the MPT updates I had received at the same time. After giving up on MPT, I spent a week with the SCT canned 87 and another week with the SCT canned 91 tunes. Now it was time to get back to either the T4 Snow or T-Rex Jr 87 tune. Since I had spent so little time with it before and didn't really put it through its paces, I went with the T-Rex Jr 87. I drove 50 miles on it yesterday and 70 miles on it today. First of all, my 2 weeks of SCT and warmer weather (mid 30s) had brought my MPG up from 17 to 19.5, so I was interested to see what Jr would do. 120 miles later, I am still at 19.5, so a plus for that. The KR stayed at zero for all the easy cruising.
The first thing I noticed after 2 weeks on SCT, Junior seemed a lot more touchy on throttle. By day 2, my foot became acclimated and it was as smooth as I posted above. I did a half throttle pass on the way to work this morning and dispatched the slow traffic much more quickly than with SCT. On the way home, I was stuck behind a just under the limit car that finally slowed to turn in his driveway and from 30, took it to WOT. The power I had missed for the past few weeks was back and I was up to 80 in a flash. While slowing back down, I checked Torque Pro to see that the boost had maxed at 19.4, KR at peaked at 1.2, timing at -6 degrees and RPM at 6080. Cat temp peaked at 1480 and coolant at 208. MPG was down to 19.4 but recovered to 19.5 a few miles before I got home. I was still running 93 octane from the previous SCT 91 tune trial.
After months of claiming T4 Snow as my favorite tune, it has been replaced by T-Rex Junior for its smoothness through all 6 gears, great even power, safe numbers and great economy.
The first thing I noticed after 2 weeks on SCT, Junior seemed a lot more touchy on throttle. By day 2, my foot became acclimated and it was as smooth as I posted above. I did a half throttle pass on the way to work this morning and dispatched the slow traffic much more quickly than with SCT. On the way home, I was stuck behind a just under the limit car that finally slowed to turn in his driveway and from 30, took it to WOT. The power I had missed for the past few weeks was back and I was up to 80 in a flash. While slowing back down, I checked Torque Pro to see that the boost had maxed at 19.4, KR at peaked at 1.2, timing at -6 degrees and RPM at 6080. Cat temp peaked at 1480 and coolant at 208. MPG was down to 19.4 but recovered to 19.5 a few miles before I got home. I was still running 93 octane from the previous SCT 91 tune trial.
After months of claiming T4 Snow as my favorite tune, it has been replaced by T-Rex Junior for its smoothness through all 6 gears, great even power, safe numbers and great economy.
Last edited by SkiSmuggs; 04-07-2014 at 09:59 PM.
#25
I wish I could understand all these variations on the SSI tunes. Between T-Rex, T-Rex JR, Snow, T4, T2, T5...... Freakin' confusing. And maybe I'm just overlooking it but when I go to their website it has nothing that explains the difference or what's currently avaliable for purchase. What gives!?
#26
Senior Member/Vietnam Vet
I wish I could understand all these variations on the SSI tunes. Between T-Rex, T-Rex JR, Snow, T4, T2, T5...... Freakin' confusing. And maybe I'm just overlooking it but when I go to their website it has nothing that explains the difference or what's currently avaliable for purchase. What gives!?
Basically, T-Rex is the performance tune, Jr is the street tune and Snow is a winter tune that is easy on the throttle.
#27
Gotcha! Thanks for the breakdown. I have a 5.0 and would like a street tune. So basically the JR only has one version right? I would just order a JR for a 5.0 truck and it would automatically be the latest revision?
#28
FX4 SCrew TT'd V6
T-Rex, Jr, and Snow and Ice all have the same top end performance, just different throttle tip in and off the line ability.
#30
hi!
iTrader: (2)
I wish I could understand all these variations on the SSI tunes. Between T-Rex, T-Rex JR, Snow, T4, T2, T5...... Freakin' confusing. And maybe I'm just overlooking it but when I go to their website it has nothing that explains the difference or what's currently avaliable for purchase. What gives!?