I wanted to share my experience with the masses on how my switch from a KB 2.8LC to a VMP Gen II went. With one disclaimer, all runs were on the same Mustang Dynamometer by the same shop and all tuning has been done by Lund. I’ll fill you in the disclaimer part shortly.
It’s important to note up front that my decision to swap was not because I did not like my KB nor was it because I thought I’d get more power from a [VMP] TVS. It was merely to switch back to a stock hood – no more, no less. My car already had more power than I would ever need. I just wanted to switch up the look and rock the stock hood. So let’s get to the interesting stuff!
I’ll provide you information about the 4 separate tuning sessions and the mods list. This will include the very first dyno when the car was stock.
THE CAR: 2012 GT500 Convertible with PP and 3.73 gears.
All runs were with Exxon 93 octane – no additives.
Here is the timeline of my car and the changes.
=========================
STOCK SETUP
MODS: None
HP: 482
TQ: 437
BOOST: 9.6
=========================
KB SETUP
MODS:
2.8LC w/3-inch pulley
75MM TB
Gimme 5 Intake
ARH LT’s w/OR H-pipe
Borla Touring Abs
ID1000’s
C&R HE
Roush 3x Reservoir
170 Thermostat
NGK TR6
Bob’s Catch Can
HP: 667
TQ: 578
BOOST: 18.3
=========================
DISCLAIMER TIME:
I had NSR cams installed by another shop. That is the only change. Of course, Lund re-tuned. They used a DynoJet for these numbers.
HP: 738
TQ: 622
BOOST: 17.0
=========================
VMP SETUP
MODS:
Same as KB except:
Gen II w/2.4
VMP 67mm TB
JLT 123 CAI
L&M NSR Cams
HP: 693
TQ: 609
BOOST: 18.0
=========================
RESULTS COMPARISON:
*Adjusted numbers… Due to the cams being installed, I was never able to get a pull on the Mustang Dyno so I don’t know what actual numbers were. However, L&M advertises 50hp gain. If I use that as the benchmark, then my car would have theoretically made 717rwhp (667 + 50) on the Mustang Dyno.
SUMMARY:
Based on this data, it appears that the Gen II did not produce as much power as the KB. I would surmise that the Gen II does edge the KB in the torque department by a few lb/ft. Also, please note the KB was only pushing 17lbs while the Gen II was pushing 18lbs of boost.
I’m not at all disappointed as the car is still “crazy” fast. I had no predisposition about what to expect. These are MY real-world results. It shows both are potent options to make power. My KB setup was flawless. I hope the Gen II will be as gratifying.
***Dyno sheets uploaded.
It’s important to note up front that my decision to swap was not because I did not like my KB nor was it because I thought I’d get more power from a [VMP] TVS. It was merely to switch back to a stock hood – no more, no less. My car already had more power than I would ever need. I just wanted to switch up the look and rock the stock hood. So let’s get to the interesting stuff!
I’ll provide you information about the 4 separate tuning sessions and the mods list. This will include the very first dyno when the car was stock.
THE CAR: 2012 GT500 Convertible with PP and 3.73 gears.
All runs were with Exxon 93 octane – no additives.
Here is the timeline of my car and the changes.
=========================
STOCK SETUP
MODS: None
HP: 482
TQ: 437
BOOST: 9.6
=========================
KB SETUP
MODS:
2.8LC w/3-inch pulley
75MM TB
Gimme 5 Intake
ARH LT’s w/OR H-pipe
Borla Touring Abs
ID1000’s
C&R HE
Roush 3x Reservoir
170 Thermostat
NGK TR6
Bob’s Catch Can
HP: 667
TQ: 578
BOOST: 18.3
=========================
DISCLAIMER TIME:
I had NSR cams installed by another shop. That is the only change. Of course, Lund re-tuned. They used a DynoJet for these numbers.
HP: 738
TQ: 622
BOOST: 17.0
=========================
VMP SETUP
MODS:
Same as KB except:
Gen II w/2.4
VMP 67mm TB
JLT 123 CAI
L&M NSR Cams
HP: 693
TQ: 609
BOOST: 18.0
=========================
RESULTS COMPARISON:
Value/Setup | Stock | KB 2.8LC | NSR’s DynoJet | NSR’s*Adjusted | VMP Gen II |
HP | 482 | 667 | 738 | 717 | 693 |
TQ | 437 | 578 | 622 | ??? | 609 |
BOOST | 9.6 | 18.3 | 17 | 17 | 18.0 |
*Adjusted numbers… Due to the cams being installed, I was never able to get a pull on the Mustang Dyno so I don’t know what actual numbers were. However, L&M advertises 50hp gain. If I use that as the benchmark, then my car would have theoretically made 717rwhp (667 + 50) on the Mustang Dyno.
SUMMARY:
Based on this data, it appears that the Gen II did not produce as much power as the KB. I would surmise that the Gen II does edge the KB in the torque department by a few lb/ft. Also, please note the KB was only pushing 17lbs while the Gen II was pushing 18lbs of boost.
I’m not at all disappointed as the car is still “crazy” fast. I had no predisposition about what to expect. These are MY real-world results. It shows both are potent options to make power. My KB setup was flawless. I hope the Gen II will be as gratifying.
***Dyno sheets uploaded.
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