Finally got my truck dyno tuned it made 376 rwhp and 489 rwtq with a 4lb lower upper c&l plenum accufab sbtb and a K&N cold air intake and it made 441 rwhp and 559 rwtq on a 100 shot but it should have been more the bottle pressure was only at 700

 

hp #'s seem really low for a 4lb and 100 shot even with low bottle pressure

 

Yea he said it was a conservative tune so maybe thats why im not complaining to much im on the stock block as it is

 

I agree, the numbers seem a little low. I was it my tuners shop the other day and i was thumbing through his dyno files. The vast majority of 4 pounder lightnings were around 415- 425 hp, Sorry do not rember the torque.

We have 94 octain avaible at the pump so that also helps.


With a predater, upper plenum and a throttle body, 94 octain and a early spring tune i made 396 hp and 480 torque. Canadiam cold air. In July I added a 2 pound pully and an idler relocate and the numbers were almost the same due to the air temp. No additional boost was noted but there was a dif. in the power.
I should have done a dyno befor the pully swap.

 

yeah it was also pretty warm here that day it was in the 80's and there wasnt really anytime between dyno runs to cool the truck down not sure if any of that makes a difference