Dave, did you recalibrate your dyno at some point? It seems like the trap speeds to dyno numbers have shifted over the years.

This car dynoed 340 and ran 11.7@121 mph. When you had a turbochargers.com 6-blade wheel/20G9 turbo a year and a half ago, you pulled 328 whp and ran a phenomenal 11.3@124 mph at 23 psi. I know your car is light, but it's not that light.

Another example -- Ivan_C from MD dynoed 360-something on your dyno a couple years ago, but trapped around 117 repeatedly at the track with that set-up. He's a good driver too and was running around 11.7 with strong 1.6 60s.

The numbers just seem all over the place, and all of these are on the Mustang dyno (not your old 2wd dyno).

Can you explain? It really seems like the dyno calibration has changed.

 

The dyno was recalibrated but hell it's been about 2 years, I was done right before a shootout and if I remember it was the year before last.

The multiplier for 2wd and 4wd were wrong back in the beginning of having it. So if these cars were at the shop close to 2 years ago, then there is a chance. It hasn't been touched since that one time.

 

Update,

Daniel just called me from the track. It is extremely hot and humid here today. He made quite a few runs at D42, the traction is horrible. He bested his best run with the car though.

11.61 at 123.1 mph was the best. This is on straight 92 just like it left the shop.

The only weight savings of the car is the front crash beam. Nothing else has been taken off or removed.

He said the track sucked. With that kind of MPH and a good 60' time the car should be good for 11.20's on pump gas.

 

42 sucks when the weather is hot and humid. I love the mph! I can't wait to do this to mine

 

Nice setup, I can't believe it's 30 psi on 93 octane only and it's daily driven. nice trap speed's as well.

 

even if db disclosed his timing numbers, you wouldnt be able to run them on the oem ecu.

the aem's knock control is awesome...yeah, maybe there are other aftermarket ecu's that offer more bells & whistles....but the aem offers what is required. if you cant get it done with the aem, your not going to get it done............

if you were on a aem & your knock sensor profile is set-up correctly, your aem logged data will tell you what your engine can or cannot take.

that is another aspect of the aem system that is overlooked....the abilty to log data @ a decent rate....you can log what YOU want to....the way it should be.

awesome results btw, buschur & crew/fam.

btw x2, hks 280 cams rock.

 

After reading this thread about how great Shell V-Power 93 gas is I went out to look for some to put in my EVO and my beater, but the shell station was getting renovated.... so i had to settle for Exxon's 93 tonight.

By the way I was wondering is 93 gas from: Hess, Exxon, Aamoco/BP, Sunoco all the same?

 

The fact it became common knowledge on this forum that 23 psi on pump regardless of turbo and so many other factors (CR, intercooler, etc) should be put to rest.

I think what created this perception was perhaps too many tuners relying solely on the stock knock control system and not attempting to listen to det in other ways. Also tuners not even trying to map a car for these higher boost levels. So many times I've read on this forum something like "tuned the car ... and we stopped at 23 psi".

If getting a car mapped, it seems to me it should be mapped for almost MAX boost, that way if the customer ever sees a boost spike for whatever reason, the car will still run safe. Even if the map is at 0 degrees timing.

 

Awesome numbers. It's always interesting to read about the performance potential of different setups.

 

citgo seems to be the only cheapy... i did a very aggresive tune for pump gas using shell since every1 claims its was the best and did a bunch of logs with other brands and the only one that knocked was citgo... it was like 3-4 knock... no biggie.. i never went to another citgo after i used up that gas to test to confirm it...




Cant do that because if theres not a fair balance of afr, timing and boost the egt will go above the safely level and put the motor along with other components at risk.

David runs a professional shop and im sure has every tuning aid possible to be able to really maximize every single big hp car which is what makes him so successful with evos/dsms

 

Sounds to me like the compression is closer to- 8:1 rather than 8.8:1...


So the motor isn't stock and that would explain why it can run 30psi without knock

.

 

david never said anything about motor with different compression...it seems to be the ability to tune at higher boost with no knock with an aem, something he already said he couldn't do with the stock ecu.

 

quick question, y are some of u guys talking about Shell V-Power 93 octane gas like its the ****? i mean 93 octane is 93 octane, or am i missing something? i know some companies have different additives but they should all have the same effective octane of 93 or its false advertising.

 

Actually, there was testing done. I saw it a while back. Shell came in with the highest effective octane at just over 93. There were some companies comming in at 91. You can probably find it on google.

 

Placebo effect? There are those who'd say the same about BP or Sunoco. A published analysis of the major gasoline brands would be nice to see who may be fibbing about their product.


My buddy made 640whp on Wal-Mart gasoline! Dat stuff is da shizzle fo' sho'...