New dyno numbers

Here are my new dyno #''s HP: 239 Torque: 281 SAE corrected.
fyi
2004 GT
Bassani catback
Magnaflow Xpipe iw/cats
Predator performance tune


Below is a graph showing my stock run VS my most recent run.

Dyno3Dec2004.webp
 

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this is not a flame by any means, but i'm very surprised at how much variance there is in 4.6's. my first 99 gt was 219hp/269tq, stock down to the paper filter. not too impressive. my current 99, a 35th anniversary, put up 237hp/280tq with only a k&n filter. both 5 speeds, both on dynojets.

is there that much variance in cars, or dyno's? or BOTH??
 
timk said:
this is not a flame by any means, but i'm very surprised at how much variance there is in 4.6's. my first 99 gt was 219hp/269tq, stock down to the paper filter. not too impressive. my current 99, a 35th anniversary, put up 237hp/280tq with only a k&n filter. both 5 speeds, both on dynojets.

is there that much variance in cars, or dyno's? or BOTH??
was it the same dyno? same correction formula?
 
I dont understand how it dynod so low? I mean you have more of the "hyped" producst than I do, I dont have a catback, at the time of my dyno the only mods I had were a K&N, catted PC, and pullies... I dont even have a tuner yet... are the 4.6s THAT different? I expected a 5-8 variation but not 12