Nate Crisman
09-29-2005, 07:01 PM
I put the BR Race FMIC on today. I had to make some minor adjustments to the IC pipes, weld on a new section, and replace one bend...no biggie, install was done in less than an hour even with tig welding and tapping for the AIT sensor.
On to the preliminary results:
STOCK FMIC at 23.5psi boost ~75*-77*F ambient temp.
3rd gear WOT pull from 3000rpm to 8000rpm. Temp starts at 76.4*F and rises to 104.0*F at 8000rpm in 3rd gear. Temp gain of about 27.5*F on a single gear pull.
Launching from a standstilll ait is 78.0*F and rises to over 105.8*F by 7000rpm in 3rd. Temp gain of 27.8*F on a drag simulation of 1-2-3 gears.
BR Race FMIC at same 23.5psi boost ~70*-72* ambient temp.
3rd gear WOT pull from 3000rpm to 8000rpm. Temp starts at 71.6*F and rise to 71.6*F!!
Temp gain on the single gear pull is ZIP, NADA, NOTHING. I repeatedly tested this, and even went out to make sure the sensor was plugged in and in the ic pipe, as it was staggering.
launcing from a standstill AIT is 69.8*F and rises to 73.4*F at 7000rpm in 3rd.
Temp gain of 3.6*F on a drag simulation of 1-2-3 gears.
Im flat out amazed at the temp rise now, it's almost non existant.
on a side note, I didn't touch the hallman evolution MBC during the test, boost was exactly 23.5psi +,- .5psi with both intercoolers without adjustment. I know alot of people say they see a big boost change going to a fmic upgrade, I didn't see squat.
At 23.5psi with the stock fmic, today the best WHP the ems logger recorded was 393whp.
At the same 23.5psi with the BR Race FMIC, the best WHP was 421whp.
The calibration file and boost pressure were untouched. That WHP gain was completely from the FMIC and ambient temp change.
WHP when overlayed is consistently 15 to 20hp better with the new FMIC core at the same boost level. Much of the gain seems to be at the higher rpm, when the stock fmic core's AIT was rising up. Granted this is comparing a single gear pull.
At the dragstrip the power gain in 4th gear will be even more, as the stock fmic is totally heatsoaked and temps are over 120*F the whole gear. with the curve of the BRFMIC, I belive actual AIT at 24psi would be below 80*F all of 4th gear. 40*F is BIG.
On an actual dragrace run last week at a slightly higher boost level of 24.5psi with the stock fmic, starting line temps were 89.6*F, were 120.2*F at 7000rpm in 3rd gear, and 126.8*F at 7600rpm in 4th at the end of 1/4mile. Ambient temp was about 78*F, but sitting in staging raises the starting temp up to 89.6. 1-4 Gear temp gain is 37.2*F. 1-3 gear temp gain is 31.6*F.
Once I have racegas in the tank, I will run 30psi of boost and see what the temp change is at the dragstrip under real conditions. Stock FMIC at 30psi was Start 91.4*F, 7000 3rd: 127.4*F, 138.2*F end of 4th. 1-4 Gear temp change of 46.8*F! 1-3 Gear temp change was 36.0*F.
It can be seen that raising the boost from 23.5psi to 24.5psi to 30psi has a significant impact on AIT and the rate of change.
This FMIC should make a very very significant power gain at the dragstrip, even more so than seen on the street on single or 1-3 gear pulls. The AIT will be the most different at the end of 4th gear.
My gut feeling is this FMIC core will be worth 2mph at street boost level, and as much as 4mph at 30psi.
On to the preliminary results:
STOCK FMIC at 23.5psi boost ~75*-77*F ambient temp.
3rd gear WOT pull from 3000rpm to 8000rpm. Temp starts at 76.4*F and rises to 104.0*F at 8000rpm in 3rd gear. Temp gain of about 27.5*F on a single gear pull.
Launching from a standstilll ait is 78.0*F and rises to over 105.8*F by 7000rpm in 3rd. Temp gain of 27.8*F on a drag simulation of 1-2-3 gears.
BR Race FMIC at same 23.5psi boost ~70*-72* ambient temp.
3rd gear WOT pull from 3000rpm to 8000rpm. Temp starts at 71.6*F and rise to 71.6*F!!
Temp gain on the single gear pull is ZIP, NADA, NOTHING. I repeatedly tested this, and even went out to make sure the sensor was plugged in and in the ic pipe, as it was staggering.
launcing from a standstill AIT is 69.8*F and rises to 73.4*F at 7000rpm in 3rd.
Temp gain of 3.6*F on a drag simulation of 1-2-3 gears.
Im flat out amazed at the temp rise now, it's almost non existant.
on a side note, I didn't touch the hallman evolution MBC during the test, boost was exactly 23.5psi +,- .5psi with both intercoolers without adjustment. I know alot of people say they see a big boost change going to a fmic upgrade, I didn't see squat.
At 23.5psi with the stock fmic, today the best WHP the ems logger recorded was 393whp.
At the same 23.5psi with the BR Race FMIC, the best WHP was 421whp.
The calibration file and boost pressure were untouched. That WHP gain was completely from the FMIC and ambient temp change.
WHP when overlayed is consistently 15 to 20hp better with the new FMIC core at the same boost level. Much of the gain seems to be at the higher rpm, when the stock fmic core's AIT was rising up. Granted this is comparing a single gear pull.
At the dragstrip the power gain in 4th gear will be even more, as the stock fmic is totally heatsoaked and temps are over 120*F the whole gear. with the curve of the BRFMIC, I belive actual AIT at 24psi would be below 80*F all of 4th gear. 40*F is BIG.
On an actual dragrace run last week at a slightly higher boost level of 24.5psi with the stock fmic, starting line temps were 89.6*F, were 120.2*F at 7000rpm in 3rd gear, and 126.8*F at 7600rpm in 4th at the end of 1/4mile. Ambient temp was about 78*F, but sitting in staging raises the starting temp up to 89.6. 1-4 Gear temp gain is 37.2*F. 1-3 gear temp gain is 31.6*F.
Once I have racegas in the tank, I will run 30psi of boost and see what the temp change is at the dragstrip under real conditions. Stock FMIC at 30psi was Start 91.4*F, 7000 3rd: 127.4*F, 138.2*F end of 4th. 1-4 Gear temp change of 46.8*F! 1-3 Gear temp change was 36.0*F.
It can be seen that raising the boost from 23.5psi to 24.5psi to 30psi has a significant impact on AIT and the rate of change.
This FMIC should make a very very significant power gain at the dragstrip, even more so than seen on the street on single or 1-3 gear pulls. The AIT will be the most different at the end of 4th gear.
My gut feeling is this FMIC core will be worth 2mph at street boost level, and as much as 4mph at 30psi.