Mods happening this Friday

[GrnBullitt08]

Pics of mods

Nice...hows the new mods feel as far as performance

 

[MrClean]

Nice...hows the new mods feel as far as performance

It feels quite a bit stronger. Even in the midday Texas heat (100 degrees F) it felt strong. The boost gauge used to show ~9 psi, now shows between 12 and 13 psi. This is how these motors should come from the factory.

I'd been running too lean with the JLT air filter and no tune which was making the MAF sensor go haywire, and only got a steady 414 rwhp. With the tune only, that went to ~444, which I'm considering the baseline. Then with the pulley 494, but that was with no air moving over the now much bigger HE. The tune has the O2 sensors on and the rev limiter raised only 200 rpm to 6800.

Overall happy with the mod, and look forward to the cooler fall weather.

 

[MrClean]

Here's an exported graph that shows the progression from stock tune with a JLT (WAAAYY too lean) in green, to the baseline tune Richard put it to account for the JLT in blue, to the pulley/HE/tune in red. Of note, Richard did make a couple of intermediate runs with a leaner AFR, (~11), but the results were about 25 hp less under the whole curve, so he "fattened" it up more...says my car is a glutton!