Cali6.5: I bought and installed it at the end of March this year. Picked it up when I drove the 12 hrs and 800 miles (Topper alert) to Bill's to the IP timed after engine replacement. Talk about 'retarded installation'...that would apply to me and my learning curves. Still feel stuck on stupid most of the time.
HO injectors and EGTs: Didn't mean to imply the HO injectors were causing my higher EGTs as that isn't the cause for me (have to quantify that as my results are never typical). My EGTs haven't changed with Tunes (Eco-neuter, and two performance), Turbo (four all told), Injectors (Std [two sets] and HO) combinations. Front drive shaft, Differential and CV axles are currently removed from doing front hubs and temps have dropped about 50* (cv joints are installed, just the axles removed from them). I may change Air Boxes as the current CAI doesn't reach the fender opening. Maybe source the old fitting at the fender from a strip yard, try the AEM unit or source a K-47. Joe runs the flat panel airbox (pre K-47) FWIW. Tires are also on the list but I digress, as usual.
As I've a 'new engine', my observations are further skewed by break in as the motor gets better, noticeably, over time. I put the HO injectors back in with the S-84 and note the truck runs better with that combination now than it did when there were only 2000 miles on the motor. I haven't driven with the Std. Injectors and this turbo in a while so I'll go back to that soon and see what happens.
These HO injectors have larger nozzles and these have all been balanced at 2400psi. With this cam, tune, and the higher speeds I was going for, it was an added performance choke point elimination. Truck runs fine with either as a daily driver.
Back to the Turbo's
ATT. Great turbo, great rep, great price, large amount of experience posted (no censor***ing), able to contact both members of the development team, and excellent vendor access here with Leroy (Burning oil). I actually saw an improvement, over time, in MPGs. Can be had as Turbo only or in Kit Form that is ready to bolt up with parts to adjust for the slight modifications to the upper intake and, IIRC, oil return line (mine was modified by previous owner). You'll really want an upgraded tune which can be had through Leroy. I haven't heard of any who have had less than great results with them.
S-84: Garret A/R 60 base line. What Bill's Engineer has done to it, I don't know. I consider Bill a friend and recognize he's also a business man and so I don't pry. Probably why we're still friends. That said, I sometimes get to be a lab rat or will get an out of the blue call about "have you seen this or we're working on that" which gets my 'SQUIRREL' mode in high gear. But, I am not a tech library and am not a source for inside info. If I've been asked to keep confidences, I do. Nuff said.
I haven't seen the Air Box so no comment on that.
Tunes, since you have to talk to him on the phone anyway for a new or re-program anyway, he may cut you some slack based on the age of the current one you're running.
Tunes. In addition to KOJO, Heath 's also done great work with the ATT, HX-series as well as the GM series. Other's are working their creative talents too but that's up to them to post up. Regardless, there are advantages and disadvantages. Results are subjective. One either likes the results or doesn't. The advantage is that you can always work with either of them to tweek the tune to your druthers. 'Your results may vary.'
Hijack alert: Stay away from Steaksauce (google it).
