jwanck11

lol.... yup.

Apologies for the delay!!!

Powder09

I have the 93 TREX also and it's been great so far!!

SkiSmuggs

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.

SkiSmuggs

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After months of claiming T4 Snow as my favorite tune, it has been replaced by T-Rex Junior for its smoothness through all 6 gears, great even power, safe numbers and great economy.

DeuceRooster

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!?

SkiSmuggs

They are working on that. The forum has better information and the T series is gone.
Basically, T-Rex is the performance tune, Jr is the street tune and Snow is a winter tune that is easy on the throttle.

DeuceRooster

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?

mrpositraction

T-Rex, Jr, and Snow and Ice all have the same top end performance, just different throttle tip in and off the line ability.

SkiSmuggs

Right, you would just specify the octane you want.

jetlag

iTrader: (2)

What's funny about that is the SSI guys used to make fun of LMS and their naming system..... then SSI did it much worse!