Supercharged Denali 6.2 l. The results are in.

[Boombastic]

I videod some speedometer acceleration runs tonight.

Stock runs 0 to 60 mph average 6.3 seconds.

Supercharged ...".........................5.5 seconds

 

 

Stock 0 to 100 mph average 15 seconds

Supercharged .......................12.9 seconds

 

There is still lots at the table as torque management and fine tuning the timing tables is going take a bit more time as it seems to play a factor. My tuner and it did quite a few logged runs and will look into these little blips.

 

In all I am happy and just love cruising the streets. She just feels so muscular and is so much fun to drive. As for hp gains we dynoed 415 hp to the wheels. I though there would be more. The boys at lingenfelter and callaway are getting more hp with the same setup, but, like I said it may take more tuning. Can't wait to take it to the track.

[66nova]

How much boost?

[Carder09]

Probably 8-10 pounds if he has yet to get it perfect?

[Boombastic]

Was told between 6 and 8 lbs

[66nova]

Numbers really look pretty good. I bet they will tune some more out of it. Manufacturer tunes are usually much more conservative than a custom tuner.

 

Also, you may or may not have figured it out yet but with this style of blower the peak numbers don't tell even half of the story.

 

[bass mechanic]

I videod some speedometer acceleration runs tonight.

Stock runs 0 to 60 mph average 6.3 seconds.

Supercharged ...".........................5.5 seconds

 

 

Stock 0 to 100 mph average 15 seconds

Supercharged .......................12.9 seconds

 

There is still lots at the table as torque management and fine tuning the timing tables is going take a bit more time as it seems to play a factor. My tuner and it did quite a few logged runs and will look into these little blips.

 

In all I am happy and just love cruising the streets. She just feels so muscular and is so much fun to drive. As for hp gains we dynoed 415 hp to the wheels. I though there would be more. The boys at lingenfelter and callaway are getting more hp with the same setup, but, like I said it may take more tuning. Can't wait to take it to the track.

what gear was that dyno taken in?

also what is your elevation?

 

oh and what was the stock dyno?

[Boombastic]

I believe that it was dynoed in fourth gear. Elevation here is 1000 -1500 feet. The company didn't do a stock dyno. That bothered me and I let them know it. But when I put the cat back MBRP on it back in the spring, MBRP dynoed it at 310 rwhp. But that was with a different dyno on a different day .

[bass mechanic]

I believe that it was dynoed in fourth gear. Elevation here is 1000 -1500 feet. The company didn't do a stock dyno. That bothered me and I let them know it. But when I put the cat back MBRP on it back in the spring, MBRP dynoed it at 310 rwhp. But that was with a different dyno on a different day .

thats still a pretty way off number even if it is a different dyno, those numbers are WAY off.

my truck did 397 at the wheel in 4th gear and 407 at the wheel in 3rd gear stock with the blower in 4th gear it was still almost 500 at the wheel.

either your tuners dyno is way out of whack or you got a lousy tune!

if i were you i would have waited for the edelbrock kit that i donated my truck for R&D you could have bolted that on and got the exact same tune as me for about 6500 bucks done!

[Boombastic]

thats still a pretty way off number even if it is a different dyno, those numbers are WAY off.

my truck did 397 at the wheel in 4th gear and 407 at the wheel in 3rd gear stock with the blower in 4th gear it was still almost 500 at the wheel.

either your tuners dyno is way out of whack or you got a lousy tune!

if i were you i would have waited for the edelbrock kit that i donated my truck for R&D you could have bolted that on and got the exact same tune as me for about 6500 bucks done!

 

Did you just say 397 hp at the wheels stock??? That is pretty impressive considering that they only have 420 at the crank. Those numbers seem way off. Most vehicles take a 15 to 20 hp loss From crank hp to RWHP.

 

Now if the did get 397rwhp stock and then got 500 RWHP with the charger, then their setup gained a little over

100 RWHP. My setup gained about 100 RWHP also.

Again hp numbers are just numbers!

My truck just gained over a 1\2 second to 60 mph and shaved off over two seconds to 100 mph. That impresses the heck out of me.

[bass mechanic]

Just wait till next week I'll get some times from my truck to compare

[bass mechanic]

Did you just say 397 hp at the wheels stock??? That is pretty impressive considering that they only have 420 at the crank. Those numbers seem way off. Most vehicles take a 15 to 20 hp loss From crank hp to RWHP.

 

Now if the did get 397rwhp stock and then got 500 RWHP with the charger, then their setup gained a little over

100 RWHP. My setup gained about 100 RWHP also.

Again hp numbers are just numbers!

My truck just gained over a 1\2 second to 60 mph and shaved off over two seconds to 100 mph. That impresses the heck out of me.

Here's the dyno

It was done in 4th gear

 

actually its a percentage of drivetrain loss and at this level its about 100 hp.

the fact is i think the truck 6.2 is under rated on hp because the torque comes out almost exactly 20% drivetrain loss, and since HP is a calculated number its pretty much meaningless on a truck that rarely spends much time over 5252 rpm.

 

[Jennabear]

Comparing apples to apples, each truck gained roughly 100HP based on available information you each provided.

 

Every dyno will be different, with the best dynos to tune on being the load bearing dynos. Inertia dynos inflate numbers, however, so long as all the runs are done on the same one, the outcome should be comparable with the increase (ie. 100HP gain from baseline is 100HP gain). Not to mention, most of the time when looking at gains from different dynos, one must look at percentage gain.