Nitrous backfires on video.
Posted: Wed Jun 06, 2012 10:19 am
At the last meeting the car was loving the gas and extra grip from sticky rear MTs.
Didnt go quite as well this weekend with a rained off Sunday. Monday was better and the track was getting better all day.
But i had the return of the dreaded backfire on a NSCC qualifying run. The explosion from the plenum completely blew apart the air filter and even blew the 72mm plenum sleeve out of the plenum intake
So on the following 2 runs i used only 1 stage each. I used stage 1 with a 70 shot at full throttle and ran 12.2 @ 114 and the wideband was in the 13's so maybe a little leaner than i would normally like. On the next run i used stage 2, a 100 shot on a pushbutton and ran 11.9 @ 119 with the wideband dropping into the 10's so all fine there.
But then i had a tough race to face and had to deicide wether to risk using both stages......
Here is the in car video
Same damage as before but it all went back together and i drove the car home. it seems fine but i will at least pull theplugs and do a comp test etc.
Didnt go quite as well this weekend with a rained off Sunday. Monday was better and the track was getting better all day.
But i had the return of the dreaded backfire on a NSCC qualifying run. The explosion from the plenum completely blew apart the air filter and even blew the 72mm plenum sleeve out of the plenum intake
So on the following 2 runs i used only 1 stage each. I used stage 1 with a 70 shot at full throttle and ran 12.2 @ 114 and the wideband was in the 13's so maybe a little leaner than i would normally like. On the next run i used stage 2, a 100 shot on a pushbutton and ran 11.9 @ 119 with the wideband dropping into the 10's so all fine there.
But then i had a tough race to face and had to deicide wether to risk using both stages......
Here is the in car video
Same damage as before but it all went back together and i drove the car home. it seems fine but i will at least pull theplugs and do a comp test etc.