Wrecker
The Oil Geek
Disclaimer: I do not have any affiliation with nor do I sell any product from any of the companies whose products are described below. Your results may vary.
I have just completed phase one of a months long completely unscientific tuner evaluation. Thanks to Unit453 and Cougar281 for their trust and support. They will probably have their own thoughts and I would love to hear them also.
The truck involved was an extended cab long bed 2006 Chevy Duramax LBZ. The one in my sig, running Cooper 285s on Procomp 16x8" wheels. Stock exhaust, and stock intake, Autometer Cobalt Boost and EGT gauges.
The tuners involved were: Superchips FlashPaq, Diablo Predator, and PPE Xcelerator. PPE was only tested to level 4, I was afraid for my stock trans.
I'll rank sotp/unscientific test evaluations.
Throttle Response: 1. Diablo 2. SCT(close second) 3. PPE
The Diablo makes the truck feel very "light on it's feet" on the 85 setting, very driveable and responsive, the best feeling tune of any. On the 120 setting, the shifts defueled hard and came early. The SCT on #3 (Performance Level) was a very close second. All levels of the PPE came on much slower and had far less throttle response, my wife called them "doggy"
EGTs (Lower is better) 1. PPE 2. SCT 3. Diablo
PPE was the king of the hill, substantially lower EGTs than the others. SCT was a fair bit higher. Diablo was smokin'. 1500F was not uncommon on the 85 tune, and 1300+ was almost unavoidable on the 120 tune. WOT got really hot really fast. Remember this is a stock exhaust (until Friday, thanks to Chad at Alligator).
Smoke (Less is better) 1.SCT 2. Diablo 3. PPE
SCT gives a little haze on the highest setting at WOT. Diablo will throw some smoke but must be on the highest setting, 85 and below are clean. PPE on level 4 smokes like it's on fire, lots of fun for tailgaters!
Mileage I have no idea, I quit bothering to keep track. It was all over the place, my right foot has a mind of it's own.
Flashlight drag 1. SCT 2. Diablo (PPE not tested due to weather conditions and scheduling issues)
This was the most surprising result to me. Using Jahesh's truck as a control, we used a hill we both know and tested the Diablo 85 and 120 tunes against his tuck running the same SCT top level tune.
Results:
Both of us running the same SCT top level tune, I just edged him out. Probably due to weight difference.
Me with Diablo on 85. He walks away, I was shocked. Repeated several times with the same result.
Me with Diablo on 120. He walked away even more, I think the massive defueling during shifts/short shifting was to blame.
Finally, I just updated the SCT today with the new mileage tune, I'll report on the results later when I can somehow evaluate it so that the results mean something. To update the tuner I had to call SCT, they told me some new things are in store for the first of the year. I told them I hoped this meant a "bigger" tune. The rep told me to be patient and I should be pleased with the results. He was hinting at a more powerful tune that would need to be purchased separately for $5 or $10.
I have just completed phase one of a months long completely unscientific tuner evaluation. Thanks to Unit453 and Cougar281 for their trust and support. They will probably have their own thoughts and I would love to hear them also.
The truck involved was an extended cab long bed 2006 Chevy Duramax LBZ. The one in my sig, running Cooper 285s on Procomp 16x8" wheels. Stock exhaust, and stock intake, Autometer Cobalt Boost and EGT gauges.
The tuners involved were: Superchips FlashPaq, Diablo Predator, and PPE Xcelerator. PPE was only tested to level 4, I was afraid for my stock trans.
I'll rank sotp/unscientific test evaluations.
Throttle Response: 1. Diablo 2. SCT(close second) 3. PPE
The Diablo makes the truck feel very "light on it's feet" on the 85 setting, very driveable and responsive, the best feeling tune of any. On the 120 setting, the shifts defueled hard and came early. The SCT on #3 (Performance Level) was a very close second. All levels of the PPE came on much slower and had far less throttle response, my wife called them "doggy"
EGTs (Lower is better) 1. PPE 2. SCT 3. Diablo
PPE was the king of the hill, substantially lower EGTs than the others. SCT was a fair bit higher. Diablo was smokin'. 1500F was not uncommon on the 85 tune, and 1300+ was almost unavoidable on the 120 tune. WOT got really hot really fast. Remember this is a stock exhaust (until Friday, thanks to Chad at Alligator).
Smoke (Less is better) 1.SCT 2. Diablo 3. PPE
SCT gives a little haze on the highest setting at WOT. Diablo will throw some smoke but must be on the highest setting, 85 and below are clean. PPE on level 4 smokes like it's on fire, lots of fun for tailgaters!
Mileage I have no idea, I quit bothering to keep track. It was all over the place, my right foot has a mind of it's own.
Flashlight drag 1. SCT 2. Diablo (PPE not tested due to weather conditions and scheduling issues)
This was the most surprising result to me. Using Jahesh's truck as a control, we used a hill we both know and tested the Diablo 85 and 120 tunes against his tuck running the same SCT top level tune.
Results:
Both of us running the same SCT top level tune, I just edged him out. Probably due to weight difference.
Me with Diablo on 85. He walks away, I was shocked. Repeated several times with the same result.
Me with Diablo on 120. He walked away even more, I think the massive defueling during shifts/short shifting was to blame.
Finally, I just updated the SCT today with the new mileage tune, I'll report on the results later when I can somehow evaluate it so that the results mean something. To update the tuner I had to call SCT, they told me some new things are in store for the first of the year. I told them I hoped this meant a "bigger" tune. The rep told me to be patient and I should be pleased with the results. He was hinting at a more powerful tune that would need to be purchased separately for $5 or $10.
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