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Discussion Starter #1 (Edited)



V6 Performance Kit Dyno Results!
Ported Lower Intake Manifold & Ported Throttle Body

First and foremost thank you David (Dgonz88 from LXforums) for stepping up and helping further the development and testing for the V6 performance market. I appreciate your patience and taking the time out of work for the install and to participate in the dyno testing. Thank you DynoComp for use of their beautiful facilities in Scottsdale and their Dyno Dynamics dynometer.

The sole purpose of this test was to establish and record horspower and torque gains for the ported lower intake manifold and ported throttle body for the 3.5L cars both as a combination and individually. The prior testing of the throttle body had been performed on more modified vehicle so in these tests we choose a vehicle with more typical performance modifications.

About the test vehicle:
2007 Dodge Magnum SXT 3.5L with Big Bully CAI, Zoomers True dual Exhaust, and Diablo Predator with canned 91 tune. Vehicle has 25,000 miles and is running the stock 300 touring alloy wheels and stock Goodyear Integrity Tires.

Dyno Results Summarized:

The baseline dyno pulls were performed April 28th 2009 at 12pm. Ambient temp was 81 degrees, 16% humidity, 28.4in pressure. The dyno pulls with the performance parts installed were performed April 29th 2009 at 10:30am. Ambient temperature was 79 degrees, 15% humidity, 29.4in pressure. The very minor change in weather conditions will little to no affect on test results. The car was 100% heat soaked during all runs and fans/blowers were pointed in grille area.

Baseline: (these are the best out of 3 pulls not average)
Peak: 185hp @ 6200rpm, 185tq @ 3500rpm
Midrange: 140hp @ 4000rpm, 175tq @ 3000
(does not include short term spike at the end of runs)

Ported Lower Intake Manifold:
Peak: 180hp @ 6200rpm, 195tq @ 3700rpm
Midrange: 148hp @ 4000rpm, 185tq @ 3000
(does not include short term spike at the end of runs)

Ported Manifold & Ported Throttle Body:

Peak: 195hp @ 6200rpm, 200tq @ 3700rpm
Midrange: 165hp @ 4500rpm, 185tq @ 3000
(does not include short term spike at the end of runs)

Gains Summarized:
Installing the ported manifold (without the ported throttle body) yielded gains as much as +8hp and +10tq in the middle range with the torque curve peaking sooner and yielding the most gains between 2500-4500rpm. This was at a cost of roughly 5hp and torque between 5000-6000rpm.

Installing the ported manifold and ported throttle body together yielded almost a +15hp gain @ 4500rpm and +20tq gain @ 4000-4500rpm range.




Observed changes in tuning:
Bear in mind he is running the canned Diablo 91 tune, not a custom tune. During the baseline pulls the car was running very lean by my standards. 14.5 for most of the pulls and dropping into 13.8 midrange and eventually 13.2-12 high range. When installing the ported manifold and TB it leans out the mix slightly. To compensate for this I added +4% fuel lowrange, +7% in the midrange, +7% high range. There was little to no change to AFR readings according to the dyno wideband after we added fuel. Its still on the lean side but roughly the same as it was on the 91 tune. The changes in AFR will be affected by the ported parts but not necessarily in the same way as it depends on other mods and the individual vehicle. These are reasons we suggest datalogging to verify that you are within healthy AFR range. There was 0 KR observed with any of the logging we did after installing the parts.

Update: Customer fixed a vacuum leak and updated his predator and reflashed the tune with fuel added and the AFR was in the perfect range.


Thanks!

 

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Discussion Starter #4
Well fellas I've got 1 left from the last big batch ready to be installed on a 08-09 LX or LC... its calling your name V6 guys :)
 
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