Dyno #'s low?!?!?

[supragod98]

Ok here is the deal. I just dyno'd my truck on Sunday and here are my #'s 406HP/464TQ :cuss: . Here is my current list of mod's LFP ported heads with "stage 2" cams, LFP 4# lower pulley, JLT intake, JLP Valve body, tuning by RWTD. I think these numbers are low for what I have. I hit 425HP/500TQ with ported eaton, 2# upper, 4# lower, intake, valve body and tune by RWTD. I was hoping that I would be in the 450HP/550TQ range. Anyone have any idea what could be wrong or if this is about what I should be at. Also with the ported heads I am at about 10# to 11#'s of boost max.

 

[Screaming01L]

Seems a bit low, I think a single blade TB might let more air in, and a 6# lower to get you to 12/13# of boost. Also, delete one of the 2 cats on each side.

 

[LightningMAS]

my guess-

have u changed ur plugs recently?
have u changed ur fuel filter recently?
have u cleaned ur I/C recently?

does ur truck run strong or does it hestitate or sputters? or what?

 

[supragod98]

No problems with how it runs. Everything as far as fuel and my plugs are concerned are good. My IC is clean. I'm not sure if its a tuning issue yet or what.

Here is a link to my dyno run http://www.youtube.com/?v=O1jfC8qRVcE

 

[LightningMAS]

my guess would be get a better tuner..

 

[camcojb]

Can't tell, what kind of a dyno was that?

Jody

 

[Screaming01L]

Can't tell, what kind of a dyno was that?

Jody

Very true!! M.D or D.J?

 

[simshahh]

definitely seems low to me. especially the torque.

 

[Freedom]

You are going to lose some torque with ported heads due to the long stroke and the loss of backpressure.

 

[supragod98]

Its a DynoJet. Same dyno I used for my last #'s. I'm going to send James @ RWTD an email with my dyno runs and some data logging I did and hopfuly he can fix the problem. Hope there is nothing mechanicaly wrong with it and it is just a tuning issue.

 

[supragod98]

Does anyone else have heads and cams from LFP? I would like to know what kind of #'s others have gotten with their heads and cams.

 

[camcojb]

What is the difference in boost between your first numbers and current numbers?

JODY

 

[supragod98]

My other pull was about 15lbs. Would if make that much of a diff? Also I know my boost #'s would be lower with the ported heads.