WOT Box + Turbo = "clutch boosting" ?

[TurboPete]

The best way to build boost while rolling is by brake boosting , leave the WOT box for the track from a dead stop .
Everyone who has Turbo Cars from Stick to Automatics use this technique.
The idea is to find the best MPH to take off from and thats where you want to make your races from .
For me a 3500 rpm's 50 to 60 roll works best so it doesn't smoke the tires once I take off . usually I can build about 5 to 6 psi's by just braking slightly and giving it some gas while in 2nd .

Good luck with what your trying to do with the WOT Box , but brake boosting is best.


Pete

 

[JeremyH]

Thanks Pete, yeah I know everyone does brake boosting, I have practiced brake boosting many times and I just dont seem to get repeatbale results ever. My brakes are way too touchy i guess, with baer 6p the slightest pressure on the brake slows me down quite a bit. Shit with these brakes slight pressure will actually bring me to a stop, where as the stock brakes i had to do slight pressure to slow and then increase pressure to come to a stop. even on the throttle i usually end up having to go wot becasue i slow down to much so by the time i have boost(anywhere form 2-6lbs is usually what i can get) The rpms are too high for my speed/gear and the boost just drops off and bogs when i let off the brake, then has to build up again.

Thats why im trying something new, I really would have figured someone would have tried this or heard of it. Even if it doesnt build as much boost or work as well as brake boosting, I believe it will be easier to do and more predictable. (for me anyways)

Regardless I will be sure to let everyone know how it works out and give yall my results, I think at the least its going to sound sick doing it from a roll lol. The sound of the spark being cut and the turbo spooling while on the highway .

 

[TurboPete]

I know what you mean , if your braking too much it slows you down even when you try to leave on boost . Its a certain rpm and speed that works best while brake boosting , but touchy brakes will make it a bit harder to figure out. Good luck and take video's .


Pete

 

[JeremyH]

Thanks, will do, wot box will be going in soon and waiting for my new bov spring. I see 17-18 in/hg at idle with my cams/setup and my bov had the 11psi spring for 22 in/hg and its not opening, hopefully the 9psi spring will fix it, so i can get to testing out new billet turbo and wot box, i am keeping it easy and staying off boost right now, it does spool noticeably faster with so im anxious to test it out!

 

[dsmx17]

My bad on the last post, long story short like stated above brake boosting is optimal while rolling to use the brakes to build load on the engine while moving, thus loading the suspension.

What i think I meant about shock has to do with a clutch dump on anti-lag will cause excess wheel spin. My other car is an AWD 2 liter, without having 4 slicks on it, and doing what you described will basically launch me into the opposing lanes. two wheel drive can only be worse.

Also I would imagine you will lose more speed than you think while getting on the two step for 2-3 seconds while rolling if the other guy is maintaining constant speed.

In re-reading my last post I may have come off as borderline retard. I promise this is NOT the case

 

[JeremyH]

My bad on the last post, long story short like stated above brake boosting is optimal while rolling to use the brakes to build load on the engine while moving, thus loading the suspension.

What i think I meant about shock has to do with a clutch dump on anti-lag will cause excess wheel spin. My other car is an AWD 2 liter, without having 4 slicks on it, and doing what you described will basically launch me into the opposing lanes. two wheel drive can only be worse.

Also I would imagine you will lose more speed than you think while getting on the two step for 2-3 seconds while rolling if the other guy is maintaining constant speed.

In re-reading my last post I may have come off as borderline retard. I promise this is NOT the case

LoL, yeah i had a hard time following what you ment with the way you worded everything.

-Brake boosting doesnt load the suspension. At least not in a good way for a rwd car, we want the rear to squat, and since most of our braking is up front its going to be the opposite.

-I disgree about loosing more speed with the clutch in, clutching in on the highway for a few seconds doesnt really slow you down much if at all really, you may slow down 1mph if you are going up hill lol. I def loose more speed by lightly braking than coasting thats just physics.

-As far as shock, im not talking gobs of boost here, only looking to build a couple lbs of boost, maybe 2-3psi max. On street tires it would probably cause a little wheel spin or chirp but dr will just grab and go. Once the clutch is out that 2-3 lbs of boost will help spool out alot, and quickly full spool.

I will be testing this rolling 2-step against just a straight-up downshift as well to see if there a benefit. On a quick suprise race or something the downshift isprobably quicker but if you have 2-3 seconds to line and match speed the quick 2-step may help considerably, we shall see.

I agree that brake boosting is simpler in theory and works fine, just trying to pioneer something that for me will be easier to do and more predictable in the end.

 

[fdjizm]

I think a rolling two step will be awesome, you should get a kick in the ass on the highway as opposed to brake boosting. and the sound!!! I wouldn't be surprised if the other guy was like "ya know what, nevermind"

 

[JeremyH]

I think a rolling two step will be awesome, you should get a kick in the ass on the highway as opposed to brake boosting. and the sound!!! I wouldn't be surprised if the other guy was like "ya know what, nevermind"

Haha, exactly!

 

[dsmx17]

If the wot box is simply a 2-step 2-3psi would be about right (still think the brake boost will yeild higher boost) my car uses an antilag while rolling which 3 seconds of makes about 20psi so 3 psi would def. be more managable either way good luck

 

[dsmx17]

Oh, and what I meant about shock to the driveline you pretty much addressed in your last post. When you "clutch in" the nose is going to get loaded, when you pop the clutch the wheels will spin before weight transfers 100%.

again, sorry for the half-spelling/thoughts. trying to multi task at work doesnt always work out so well.

 

[JeremyH]

If the wot box is simply a 2-step 2-3psi would be about right (still think the brake boost will yeild higher boost) my car uses an antilag while rolling which 3 seconds of makes about 20psi so 3 psi would def. be more managable either way good luck

Yeah, def no where near that much boost, dont need it. My car makes 330rwhp in na form and i only run 12psi on the street, which made 563rwhp/540rwtq.

Oh, and what I meant about shock to the driveline you pretty much addressed in your last post. When you "clutch in" the nose is going to get loaded, when you pop the clutch the wheels will spin before weight transfers 100%.

again, sorry for the half-spelling/thoughts. trying to multi task at work doesnt always work out so well.

Yeah its a fine balance bewteen tarction and wheelspin as always, clutch out just right and you get the rear end to squat for better traction too, so im sure I will have to find the sweet spot.

Yeah im at work with nothing else to do lol

 

[dsmx17]

haha yea work bordom breeds posting for sure

 

[JeremyH]

So i tried out the rolling 2 step and it definetly works and builds boost as i thought.

I tried it in 4th gear at like 45mph and just quickly put the clutch in mashed the gas to floor saw 4psi and let the clutch out, nice little kick in the ass. But it wasnt the best speed/gear to do it at.

The trick is be in the right gear at a rpm close to where your 2 step is set that way when you let out it doesnt want to drop rpms and bog a little.

It's also a little easier than trying to down shift and would come in handy at speeds where you are cruising and dont have enough gear left to downshift to the next lower gear.

More to come on this.

 

[fdjizm]

clutch boosting FTW!

 

[jodadejss06gt]

Get Greg a camera and video damnit! He doesn't have anything better to do. LMAO

 

[JeremyH]

Greg was actually with me when we went out trying it out, didnt remmeber to take vids...oops. Maybe i can get a vid this weekend.

 

[jodadejss06gt]

Hell yea well I'm going to attempt MIR tomorrow, wish me luck!