Mpi 2008 lmm

[IdahoRob]

Nathan finally got around to dynoing the 2008 LMM yesterday at a ITD dyno day.

The mods are built tranny, lift pump, and MPI twin turbo's. Still on stock cp3 and stock injectors.

Big tune made 647HP and the street tune made 577HP. We just ran it 3 times and didn't do any fine tuning.

This was building 42 pounds of boost on the dyno, where it normally runs 55psi on the street/track. Max egt on the dyno <1200 degrees

We also found out why the truck was only running 12.3's. The converter is junk and would lock in tow haul, but not stay that way. I used the latest EFI update to apply the lockup solenoid, then it would stay locked on the dyno. The run where the converter didn't stay locked was 55x HP.

I dyno'd my truck also and it layed down 667HP on the tune that ran 11.70 at the track so the numbers seemed about right IMO.

 

[05smoker]

Sweet!

I am going to a meet and greet in Columbus and hoping that Hotrodtractor brings his 06 with MPI twins. Still have not seen a set in person.

 

[LBZrcks]

Nice #s Rob and Nathan!

 

[jrad12381]

Sweet I cant wait to get my MPI twins. Good work.

 

[slowlmm]

cool #s looking good and those egts are :cool2:

 

[sweetdiesel]

Nice work Rob and Nathan
Is this tuning completely different than anything else you have seen

 

[Kat]

I like the way the track #'s back up the dyno numbers

 

[Mike L.]

I like the way the track #'s back up the dyno numbers

Cause it's a Duramax and not a Dodge.
Dodges make 1500 hp and run mid 12's.

 

[duratothemax]

Cause it's a Duramax and not a Dodge.
Dodges make 1500 hp and run mid 12's.

:rofl:

 

[BoiseRob]

Rob,

What converter is in Nathan's Allison?

Rob

 

[bullfrogjohnson]

Congrats on some awsome #'s

 

[IdahoRob]

An old used one that came out of a twin turbo/duel pump LB7.

 

[jrad12381]

It sounds like its time for Nathan to get a new converter in there. Maybe all the LMM twin kits he just sold will get him a new one.

 

[jrad12381]

Nathan finally got around to dynoing the 2008 LMM yesterday at a ITD dyno day.

The mods are built tranny, lift pump, and MPI twin turbo's. Still on stock cp3 and stock injectors.

Big tune made 647HP and the street tune made 577HP. We just ran it 3 times and didn't do any fine tuning.

This was building 42 pounds of boost on the dyno, where it normally runs 55psi on the street/track. Max egt on the dyno <1200 degrees

We also found out why the truck was only running 12.3's. The converter is junk and would lock in tow haul, but not stay that way. I used the latest EFI update to apply the lockup solenoid, then it would stay locked on the dyno. The run where the converter didn't stay locked was 55x HP.

I dyno'd my truck also and it layed down 667HP on the tune that ran 11.70 at the track so the numbers seemed about right IMO.

What type of torque were these tunes putting down?

 

[calabria69]

that is awesome....cant wait til Rob and Nathan get my started next week.......

 

[IdahoRob]

Have a new converter sitting in the shop for testing.

 

[TrentNell]

:rofl::rofl::rofl:

Nice work Rob and Nathan
Is this tuning completely different than anything else you have seen

congrats those are good #'s

 

[Roc8man]

Nice numbers! Sounds like we have enough MPI twins now to have a quorum. Maybe there needs to be an MPI twins get together? Ideas?

David

 

[duratothemax]

Nice numbers! Sounds like we have enough MPI twins now to have a quorum. Maybe there needs to be an MPI twins get together? Ideas?

David

Do I get any special privileges or title because I have a second set ever made??

 

[jrad12381]

that is awesome....cant wait til Rob and Nathan get my started next week.......

Sweet I am glad to see there are going to be some LMM twins running around.