[2007 5.9]

I put in my SPS62 last night nd really love it, looks good (no pics yet) sounds good and seems to keep temps under control...but alas I have some questions that I would like answered....please....

1. I have noticed spool-up is significantly slower than stock, I am no longer able to lug it from 1500-1700rpm's without stopping traffic behind me, this concernes me on two fronts. One being that this was supposed to be a great turbo for towing and daily driving, but with not being able to lug it, is the only way around it to have lots more rpm's??? And two being how do some of you leave a dead stop and not cloud your trailer or boat in soot???

2. Will spool-up get better as the turbo breaks-in??? I currently have 75miles on it and have pushed to 35-38psi a few times, what is the proper break-in procedure, if there is one???

3. Might some of you know which TNT tune would be the best to help spool?
I had started out on SW#5 and default on everything else but TQ on #2, and today when I had some time I bumped it up to SW#7 and Tq #3, this seemed to help some but still wondering if you guys have ideas for this???

4. Driving around seems that my EGT's are high compared to stock turbo, same hill I drive home everyday at 70mph, before with stock turbo I would see 8-10 psi and 600-700*. Now with the new turbo, same hill and same speed I now see 2-4psi and 1000-1100*, but once I input more throttle boost comes up to 10psi and temps down to 900*, but by this time I am doing 80 mph...any thoughts???

5. Overall temps are down, with the set-up listed above at 3/4 throttle I see 35-38 psi and EGT's int the 1200* area, which is about the same if not a little better than stock, but I know that my Drive Pressure is way down, thus saving my HG and anything else affected by DP.

If anyone can point me in the right direction as to where to go for spool-up I would greatly appreciate it....Oh and BTW, this things kicks it hard when asked too....!!!!!

 

[johnmeador609]

You just have to drive a little different. Roll into the throttle until the turbo starts catching up then just keep rolling into it should clear most of your smoke up. With 90's and the TNT you should be able to BLAZE a 62. Is 35-38psi all it will build?? If so check your waste gate to make sure its not bleeding pressure prematurely.

 

[RDyson]

Mine was the same way after the install--only worse. I have an SO motor. Like said above, you have to learn how to drive a little different with the bigger turbo. You might look into a boost fooler to allow more boost. The Smarty will only fool to a certain pressure I think.

I have seen 52# on mine with my TST stacked with my Smarty. But now that I have the Revo/TNT, it's a new learning experience again. You might try a little higher rail pressure. That should help get the turbo spoolin' a little faster.

I am running #7 with moderate tq, 3- rp and default timing. It runs good, but I'm getting some timing rattle at WOT. My fuel pressure is good at 21# and rp is holding around 20k.
More choices makes for more tuning time.

Randy