VaporTrail

So, coming off the transmission and traction topic, has anyone actually used either a GReddy remote switch, AVCR speed based boost, or similar device at the track? For example, you would run a lower boost pressure at lower gears, and increase as gears allow traction. I'm curious if anyone has done this VS just running high boost all the time and modulating the gas for traction. Thanks!

Arturbo

Wait till you see what I do with the AEM.

VaporTrail

blah blah blah, quit talking about it, SHOW ME SOMETHING.

POLLO

Wait ? Awww come one we've been waiting since 1987

VaporTrail

at least!

Arturbo

Let me rephrase it, wait till you see what Joe and me do.

DIRep972

iTrader: (1)

hehe like said in the transmission topic. longer gears are the last way u should ever think about achieving traction. i think turning down the boost should go 2nd to last.

falcongsr

cut us a break we're not exactly neighbors and i have a social life to tend to.

my turbo will be here FRIDAY!!!!! (thats TOMORROW now that its after 12).

my boost solenoid/pigtail will be installed next week.

LsTurbo91

yea I've done this with the profec B but it wouldn't be consistent so I got a AVCR mainly for that reason. Hell of a lot better, less things to worry about.

VaporTrail

by consistant, what do you mean? When you switched from low to high boost, did you incur spiking? I've always used the profec B with great success, from mild boosted apps all the way up to 30psi+ monsters. But I'm always open to new ideas, thats what keeps me on top

VaporTrail

ttt

true

I have a .7 bar spring in my tial 46....no traction till top of 3rd unless i use part throttle. I've had enough so I ordered a .5 the other day from Viren. I'm hoping I can keep traction at 7 psi. The reason I did this was specifically so I can try and utilize the AVCR boost/gear function. I will let you know how it goes....I may have to get the .4 bar instead.

It's pretty weak when your honda is faster at 60% throttle then at 100. I'm hoping to do something like 7psi in 1st, 8psi top of second, 10psi in third.... See how it works.

EDIT: I just modified my order through Viren to start with the .4 bar spring. I want to start as small as possible...and tune the avcr to be on the virge of traction the entire ride. A compeltely different demension of tuning.

[Modified by true, 6:11 PM 10/24/2002]


[Modified by true, 7:29 PM 10/24/2002]

DIRep972

iTrader: (1)

hehe. before u turn down the boost make sure u have tires that can grip. at 237ft/lbs of torque i couldnt even scratch 2nd w/ BFG's on my car.

true

I have the new bfg g-force TA drag radials on there now..... I thought they were supposed to stick! 10 psi in the crx skips them easy...

jamal-188

So what size rims/tires are you guys running? I know my 18's are gonna cause serious problems but they look so damn nice(I know I'm a ricer).

b18bturbo

i used the profec b 24 pounds low boost 2 step making 8-10 pounds out of the hole and thne hit high boost in 2nd gear

Prod

Arturbo

Gotta love the Vehicle Speed vs boost table in the AEM

Can't wait to mess with the AEM when I get it !

DIRep972

iTrader: (1)

WOW CRAZY. mine stick perfectly fine. maybe its the wieght, what u running for suspension?

ninesecrx

The beragnholtz's do it by useing their avcr running it off the tranny...it really helped them out.

boostaholic

My next set of tires are gonna be the g-force drag radials. I'm still old schooling right now and using the Nitto 555r's. The break loose all through 1st and 2nd at anything above 4500rpm and this is not dumping the clutch, just nailing the gas from a roll.
John, i've tinkered around with the gear based settings on my AVCR. With my B16, i could never get traction in first coming out the hole so i tried to lower the boost down to 8psi in first. My AVCR holds max boost like a champ, but i couldn't get it at exactly where i wanted to with the gear settings. It would spike a little to 9/10 psi. It helped a little bit, but would still spin on the top end. This was on street tires mind you, so i think if you combine that feature with slicks it would really help your traction issues.

Arturbo

werd!

dbman96

K I'm excited about this too, but if you work off the VSS and set low boost at low speed and increase to higher boost as speed increases, I'm thinking wheelspin is going to immediately make it THINK it's going "high speed" and kick it straight up to high boost, which will make for more wheelspin, more boost, etc. I guess I don't see the real advantage here. Except for maybe limiting boost at freeway speeds just for the sake of engine longevity

Now if we could tie in the ABS sensors from the back wheels...


But that's not going to happen until version 0.97324, which will be out in "a couple of weeks"




[Modified by dbman96, 2:07 AM 10/25/2002]

Prod

Dbman, it reads off the speedo sensor check it out...shouldn't be a problem

http://www.aempower.com/bbs/viewtopic.php?t=4

dustin

Yeah but the speed sensor is going to think the car is going faster under wheelspin. You'd need to monitor the ABS wheel speed sensors to know whether VSS speed was actual ground speed...

That's why I'm keeping my AVC-R. I think gear based boost is a much better idea because torque at the wheels is what determines traction. Don't let supra guys on the AEM site tell you that speed is what determines traction (their example: You won't break the wheels loose in 3rd gear from a roll on the freeway... haha... it's cause you're in 3rd gear!)

Prod

Now that look again, I think you're right Dustin

Wonder if one could hook up the ABS sensor to the speedo port on the EMS, the value is scalable so I guess as long as the ABS sensor is sending data constantly that could be used...or maybe just put a vss sensor on one of the rear wheels (looks like I'll be visting the ems forums again)