RWHP questions

Chaywood

Member
I have a 2000L with 63,000 miles and the following mods.
JLT cold air
SCT big air 90mm MAF
Denso plugs
6# lower pulley
Punisher valve body.
Pacesetter long tube headers.

I had it dynoed after the headers and 6# pulley with a tune from a respectable mail order tuner. The truck ran great but only put down 401RWHP. Is this a normal run or do you think I should be able to get some more power out of it. The transmission was acting up and I had it rebuilt just after the dyno and haven't dynoed it since. What kind of power should I be getting. I was a little disappointed with just pulling 401RWHP.
Any thoughts?


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