Recent content by Dallas J

I think you missundstood (or I sloppily typed..), the local site is ~30-50mph. I ran the wing there to test structure and cause wings look RAD. Im at Crow Landing, average speed here is about 50 with a few pulls up to mid 70s. The wing even at 50mph is putting quite a bit of load to the rear...

Well that was an arse of a day-1 at Crows Tour. I only got to test the car at our low speed lot where most things are ~30mph and peaks of 50ish. It was ok there, and missed our local Packwood event due to weather/fam excuses. With the extra power and the way the car handled last year, I brough...

PS4S are my choice. I also run them narrower, 275s. The ECS work great too but wear much faster if they’re also your street tire and tread depth will always matter for big rain like lincoln torrential downpours.

Awesome! Im glad Im not the only one thats noticed this being a non-trivial issue. Edit: I watched the vid and that got me thinking how to I make sure my setup isnt an on off switch with dumping. Well, I think Ive solved that before its come up. My programming will do a few things. Analog...

It seems to be on modern fords. Its just that boosted cars dont vent the boost right away and it causes that surge with the torque maps not accounting for that small period of more airflow than expected. In the maps, there isnt anything to correlate pedal lift to throttle close. Its all just...

So... Theres an interesting and undesirable effect of the Ford Torque Management and BOV control on boosted mustangs when it comes to AX. When you roll into throttle and lift off throttle, the throttle body itself opens as quick as possible and stays open longer than your foot is off the...

If we aren't complaining about PAX being unfair, are we even autocrossing?! Yeah, PSI is controlled by SCCA but is arbitrarily adjusted after RR makes his adjustments. So its definitely biased by PAX. The CAM-T index should certainly be harder than CAM-C if two cars were equally prepped...

Its not that the PAX is hard, its that the bar is high. PAX is based on existing performance over multiple events, and only looking at the top 5% IIRC. Schulz is basically the benchmark at this point, though Wong is getting up there too. Both are absolutely top tier drivers but Schulz's build is...

FYI, none of the knuckles change geometry. Check my tech post about it.

Extended ball joints are always sketchy, you really cant go a lot longer than OEM without adding flex or risk into the system. On our earliest Evo control arms we used 4140 normalized for the +10mm ball joints and had a couple cases of them bending slightly when hitting hard curbs on track...

Heres some pulls on a mustang dyno. Limited by airflow on the small intercooler it was heating up pretty quick but not cooling back down. Stock on a mustang dyno a Gen3 makes 380-400hp and 350-370tq. With the lowest boost and 92 oct my setup made peak ~550hp/510tq. This would be low 600s...

Heres a dyno example of a G2/125 setup and why I went with it. The torque really only increased by 100ft-lbs peak, and the HP is made holding that torque longer as the boost makes up for top end air flow restrictions. It also only weighs about 40lbs total. They claim 35lbs total change, but...

Think of it more like a short ratio 6 speed where you only use 2-6 for performance and 7-10 as OD cruising. 1st is useless. I need to tweak my shift maps so sport mod automatically shifts to second at a stop and never downshifts to 1st. Right now I do have base mode set to skip 2nd so on the...

Stock I could roll out of the start basically full throttle in 1st without any thought to traction. Felt so anemic compared to what Im use to. Now, I leave in 2nd and if you listen to any of my runs I get a nice little chirping of the tires but not spinning. Looking at the data, I roll into...

I can put down all the power with the wheel straight in 3rd gear which does 75 at 7500. The big effect is that I was constantly downshifting (or trying but getting locked out cause OEM tune) to 2nd cause the car was so slow out of corners. So this way I have plenty of power thats usually really...