jmb614

Despite a record high today of 85F, I had the beast re-tuned and dyno tested.

The beast pulls like a ****ing freight train, and once Bruce gets a chance to work more of his magic it will be even stronger. I'm very pleased with the results thus far. As can be seen by the fueling graph, there is still power left on the table and a nice cushion for when the temps drop.

Tests were done on a Mustang load bearing dyno.

Hulk

Nice..can't wait to retune mine with new ttm injectors and a looped fuel rail...

jmb614

Yeah the rail and injectors really help smooth everything out. The way the car feels alone is worth it, let alone the peace of mind.

novae500

What mods do you have on the car? Nice #s!

jmb614

Thanks! I can't wait to get it out to the track on a 50F day and see what the numbers really mean. Though it is nice to quantify gains from mod to mod etc.

Headers, pulley, fueling kit, HE, trunk tank etc. Have quite a few other ideas yet, but so far the car feels good.

jmb614

It's interesting to note that towards the end of the pulls, and every log I've done, shows that as the car gets closer to redline the TB begins to slowly close. TPS goes from 98-99% down to about 90% at redline. TPS shows that, regardless of what gear the car is in, the TB starts closing at about 5800RPM.

Also, with the fuel here having 10% ethanol, AFR numbers are quite a bit different than I originally thought. I believe that stoich with 10% ethanol is 14.2 instead of 14.68. Knowing this I think that AFR numbers that people see with datalogging equipment may actually be quite a bit off; does anyone have any further insight on this? Am I way off base?

jmb614

Found this for anyone interested: http://ls1tuningguide.com/files/free...conversion.pdf

Despite the mass exodus hopefully someone finds it useful; I know I do.

Forrest Gump 9

Very solid power Jason. I'm glad you're happy now. I'll see you at the track

I have some trick up my sleeves for you guys this year.

kustom2k1

TB starts closing at about 5800RPM.


Thats to soften the shift into the next gear.

E55W

Nice, what pulley are you running

chawkins2001

WOW, that is an impressive graph, nice flat tq curve and power keeps pulling, even up top. Shweet HP under the curve too homey, and are you on the stock t/b?

jmb614

Thanks, David! I can't wait to see your beast hit 10's this year!

Gotcha. I wonder if moving the shift points higher will cause the TB to close later in the RPM band; if that makes sense?

185 ASP welded design.

Thanks Craig!! Yes, I am still on the stock TB. It's like sucking a softball throw a garden hose An 82 is the next mod on the list. I want to see what kind of results I get at the track before upgrading, and I want to take the beast to Long Island to have Bruce install it and make a few other changes along with it to open her up...

Of interest, after Jeremy solidified the file, (which only took one revision), I made a final pass with the trunk tank full of ice. While it kept the IAT's in check, I must not have had any issues with IAT's. The AFR, timing, and HP/TQ numbers all stayed the same.