Well I finally got my truck Dyno tuned today, went down to Apex motorsports right around here in santa clara. Tuned by Byron (great guy, a friend of Sal's).
My Basic mods for reference: 2001 Lightning
PSP 2lb pulley
PSP Chip (2-way)
PSP Open air Filter
Denso IT20s
Bassani Cat-back

Did about 8 pulls on it, first run (on the safe side of the chip) I got 351hp and 424 torque..

After trying to lean the A/F out a bit, it turned out the truck actually LOST power down to about 345 or so...

What ended up gaining power was to actually RICHEN the A/F to around 10:1 or somewhere around there i believe...Interesting isnt it? The beast wanted more fuel!
Anyways on the last Run, I ended up with 356.2 hp and 436.1 lbs of torque..

What do you guys think? Is this about where I should be? This BTW is all on the safe side of the chip, we put it around 9 degrees of timing, and had the street perf. side at around 12 degrees, even though suprisingly the truck didnt respond very much to timing changes, which was a bit weird. (the truck STILL pings ever so slightly on the street perfomance side. Crappy 91 octane Cali gas )

PS. When they go WOT, man that supercharger screams bloody murder in the shop! WOW!! And the best part was watching Byron with his head under the hood listening for pinging! I was about 15 feet away and I had my ears plugged! That guy is going deaf REAL soon, hehe...

 

Glad you got byron working on your stuff. He is a good dude.

As far as #'s, is this a 99/00 model?

 

nope, 01, edited

 

I was thinking that it would be a little closer to the 375-400HP range?

 

hmm... those #'s seem low. With 0 mods, I was at about 350hp/430tq.

With a chip/filter I was at 376/450. What type of dyno was it?

 

I have almost the same mods:

Diablo Delta Chip
JL 3#Pulley
JL Ram Air
Bassani Cat-back
Denso Plugs

This last weekend down in LA at Superior Automotive Engineering in conjunction with SoCal Diablo, I pulled a 380.1hp/462.4 TQ at the Rear wheels on a conservative program. On my race program for higher octane gas, I pulled a 390hp/472ft/lbs TQ. I was hoping to hit 400hp/500TQ, but I think with the mods I'm planning (E-fan/Pump, SB t/b, and traction bars) it isn't that far away. I have no doubt that with a 4#'er I could have been close to 400/500 also.

 

Even though your only "power mods" for the dyno are the 2 lb. and chip (the filter will net some gains but probably not much on a stationary dyno), you should see a little more power, maybe around 370-375. I've seen stock trucks dyno 350ish to 360ish. It also seems odd to see that you peaked when running 10:1 AFR. That is really rich and this isn't a turbodiesel where you can turn it up and it'll run like a champ. Maybe something in your fuel system is clogged malfunctioning? I would think 10:1 is too rich and you would lose power, not gain. Just my thoughts.

 

I run a 4#, chip, jlp ram air and Magnaflow catback and see 417hp/513 tq at rear wheels at 11.8 a/f.

You should easily be @ 370ish. Was this HP measured on a Dynojet?

 

yup, all dynojet equipment...
hmm yeah i thought it was a little low too... i dunno??? what do you think I should do?

 

Whoa that's pretty good. I didn't even see those numbers with my efan and some other mods. With 4# and chip (91 oct street side) I pulled 394/495.6.

 

Those are still good #'s. Prior to this tune, i was making 387/490 tq with a loss of boost due to a lifted cylinder head. People claim the magnaflows dont make power or something

Moto... Sal and Byron are pretty tight. Maybe Sal can give him a call and figure out why your #'s are so low. Do you have another dyno you can goto to see if there is a difference in HP?

 

Yep....

Does seem a bit low......Bone stock, my 02 dynoed 354/416 in 78-80 degree weather. Not even a K&N

I would agree that you should be around 370ish and in my opinion 10:1 is WAY to rich...especially with that low of timing. The richness may be causing the pinging you are hearing (or it just may be exhaust pulses)

Tom

 

Yeah i dunno...I was happy that I at least gained some from pull 1 to pull 8...
Truck feels really strong..I really dont know whats up with the #'s...anyone have some ideas?

 

The the back side of the passenger cylinder head to see if its leaking. Next would be checking for belt slip.

 

Man I'm glad I don't life in California
I've found over and over again (through 10 Chip programs) that mine runs absolutely schitty with anything less than 15/16 degrees of timing. I'm currently driving 24/7 on my 18 DEGREE TIMING performance program on the street and I have never ever had pinging or detonation.
Last yr I ran 17 degrees all winter long for months in a row of single and double digit degrees with again no pinging on pump gas. I do only use Ultra 94 though.
Are you sure you got the timing right ???
9 degrees is below stock isn't it ???