Burrosito

Hey guys - just out of curiosity, how does one brake boost? Is it as simple as what I think it is?

bluebeastsrt

If your thinking it's as simple as holding the brake pedal while giving the car throttle to build boost. then yep it's that simple.

Burrosito

Haha cool thanks - was always wondering how it was achieved.

Morbid Intentions

Well the discussion started when you showed me the video of you putting 3 car lengths off the bat on Eriks LS3 vette.... and then said it was because you were brake boosting, when I know full well that vette was making more torque at the given RPM you were at, I clearly remember saying that you got the jump due to his untuned automatic transmission lag and then you and Jeremy both started in on how it was because of brake boosting, which in turn got me very irritated... I'd also like to add LS3 C6's trap well north of 106MPH (which is what you trapped a couple weeks ago)

so when all is said and done... yes, that was your argument... even though you might not have meant it because you might not know what an LSX power curve looks like, that is what you were claiming

also, about the GTO race... we already have both been to the track and since my GTO is put away it's going to have to be good enough... I ran 12.7 @ 106MPH on a 1.7 60ft... you ran 13.6 @ 106MPH

what was your 60ft anyways?

piperporsche180944

In that race I beat the driver not the car. For the last few weeks the car has been running off, including my trip to the drag strip. I would gun it WOT, felt ball-less and stalls out when I let off the throttle. Jeremy's Camaro trapped 107mph naturally aspirated and I kept with him when he was turbocharged. The car is going to the mechanic Friday to sort things out. Ill keep you updated on my 1/4 mile time when I get it back.

13.6@106 pissed me off as I ran .6s faster and trapped higher with a cat delete and a tune (a lot less mods than I have now). The 60' was 2.8 as traction was non existent. My mechanic was also disgusted with my time as he got a 12.6@118mph with the same exact set up.

Stone629

The 118 trap makes much more sense against an LS3 Vette. I'm haven't seen too many LS3 C6's trap under 113, most have been in the 115 range. Still, running 13.6 on a 2.8 60' is pretty damn stout.

bluebeastsrt

Oh and sinse the arguement involves a fellow forum member I'd like to take back the dumb comment I made in my first post and just say that I politely disagree about the merits of brake boosting espically from a dig. If your car is set-up to run in the 118 range. It's not brake boosting thats winning you races against LS3s. It's power. Brake boosting will do nothing but help from a roll though with your larger turbo.

Mishri

hmm.. if the arguement is you would have lost the race if you didn't brake boost then yes, you would be correct. If the arguement is that because you can brake boost and he can't you won then no, that is incorrect.

right?

Morbid Intentions

you beat the transmission, the driver has nothing to do with dead spots in a transmission or starting late because of throttle positioning sensor lag.... and brake boosting had nothing to do with that either.... I'm glad Erik chimed in and told me when he put it in manual mode the tides turned though... it just proves my theory on what happened in that race

when can we just drop this and admit you brake boosting did not give you a two-three car length lead on that vette within 2 seconds on only 15PSI?

also, other LS2 GTO's have trapped 109MPH bone stock but that doesn't mean my car is a 109MPH car, even after my tune... my car is a 106MPH car... because that's what MY car ran

I'm not doubting your car will trap faster but in the racing world we don't normally use other peoples cars to say that is what our cars will run

Mishri

Thats the only way i race, well other 5.0s are doing high 11s with intake+tune, so thats what my car will do