Drag/Acceleration The Official 1/4 mile track thread.

[Revvdmedia]

if anyone wants to add their DA, you can use this website here to figure out what it was when you ran. Or maybe just include your track, date, and time and someone else can pull it up if they have time.
DA Calculator - Density Altitude Calculator - DragTimes.com

I've used this site for a while but it was last used on my Mustang which was NA. Not sure which "make me feel better" time/mph I should use for a minor modded turbo car... It gives 3 corrected DA times.

 

[Doel]

I've used this site for a while but it was last used on my Mustang which was NA. Not sure which "make me feel better" time/mph I should use for a minor modded turbo car... It gives 3 corrected DA times.

oh I wouldn't miss around with "corrected times", that stuff is never accurate, just use it for the DA figure. It'll tell you what the DA was when you were at the track by putting in the date and track you were at.

 

[Tonkabob]

I'm happy to add DA if we can get people to provide that. Same for wheels but those are more of a gray area. Over half the top 10 have wheels but harder to say what is better or worse unless we also have the size, weight and tire size. Terrys 18 inch 19 lb are significant improvement, my 22 lb 19s also good. lighter rim 20's, depends. Plus some have wheels and don't know the weight like Angel.

Also this is Angels thread who got banned from it permanently so if someone wants to take over, I'm just baby sitting.

 

[Tonkabob]

you're getting left behind Tonka, when are you getting back out there?

I'm not in a hurry. Fun to watch all the frenzy. Maybe when I get back from Hawaii, i'll make the snip.

 

[DaBears4Lyfe]

I'm not in a hurry. Fun to watch all the frenzy. Maybe when I get back from Hawaii, i'll make the snip.

You already did a version of it that didnt pan out right? You used the back of the draggy and seperated the brake line from inside the car. You didnt pull it from the ECU right? If you did that why dont you do this? Or is it a John issue. Im assuming since Terry came up with the DIY he wont want you to use it lol.

 

[Terry@BMS]

I'm not in a hurry. Fun to watch all the frenzy. Maybe when I get back from Hawaii, i'll make the snip.

You're at 1.80 60' now right? So get that down to 1.65 and you'll shave around 0.22s off your ET all else being equal. 11.62. Maybe 11.5x with the right weather.

 

[Terry@BMS]

You already did a version of it that didnt pan out right? You used the back of the draggy and seperated the brake line from inside the car. You didnt pull it from the ECU right? If you did that why dont you do this? Or is it a John issue. Im assuming since Terry came up with the DIY he wont want you to use it lol.

lol he will do it, break the record or come close with similar trap speeds to what everyone else is running, and John will again start claiming his flash superiority. But the train has left the station already and I think enough people around here finally see through his bullshit.

 

[Revvdmedia]

lol he will do it, break the record or come close with similar trap speeds to what everyone else is running, and John will again start claiming his flash superiority. But the train has left the station already and I think enough people around here finally see through his bullshit.

That escalated quickly.

I could see an ECU tune having more capability than a MAP sensor piggyback, depending how far the ECU tuner is willing to go. Normally, canned tunes (ECU) are still on the conservative side because one size does not fit all. Since using fuel wires on a piggyback, ECU tunes don't have much advantage controlling AFR. I would think the only way an ECU tune has an advantage is parameters that push the car further (possibly into the danger realm), like pushing stronger ignition advance than the ECU normally commands, higher boost thresholds and little things like that.

I'm just spewing there, but I will say regardless who is "better," the piggyback is doing well compared to an ECU tune. At the end of the day, if things were equal - IE 15 degrees ignition advance, 17PSI boost, 12.0 AFR, same drivetrain, both cars would probably be performing pretty close. It's not like the old days where a faster car was just a Grainger valve and possible detonation away. Or like in my old Turbo Dodge, accidentally leaving the line to the wastegate solenoid unplugged and wondering why the car suddenly is bouncing off the 14.7PSI boost limiter lol.

 

[Tonkabob]

You already did a version of it that didnt pan out right? You used the back of the draggy and seperated the brake line from inside the car. You didnt pull it from the ECU right? If you did that why dont you do this? Or is it a John issue. Im assuming since Terry came up with the DIY he wont want you to use it lol.

I really don't put that much thought in to John or Terry. (I actually have 3 BMS purchases and only 1 from Tork so maybe I'm a BMS fan boy?) I only tried the brake switch plate a few times and even though it launched on boost the throttle appeared to not open fully until almost 20 MPH. Car didn't sound right so wasn't going to break something.
My only hesitation on the BMS break snip is cutting the wire. Also waiting to see how it works for others. If I do a clean mod and keep the RPMs reasonable i'll probably try it out in a few weeks. Plus I get to break more hearts when I run low 11.6s and then we have to go back to shit, well that Tork tune is still faster. Lol.

 

[Tonkabob]

lol he will do it, break the record or come close with similar trap speeds to what everyone else is running, and John will again start claiming his flash superiority. But the train has left the station already and I think enough people around here finally see through his bullshit.

Totally agree with the first part. I'll beat best stock turbo by a tenth with less mods and similar trap speeds. Lost my small launch advantage but still have faster shifting with no throttle close.

 

[Crewdawg130]

My DA was 2000. The tires I used are way to much. Posted but not really recommended. Is just something we have in shop. Also we have to put stock springs every time. We have a 17” combo we’re going to try next but waiting on swaybar links.

 

[Crewdawg130]

Also we found and issue with the BOV doing some crazy stuff. That’s been fixed so we’ll try again this weekend.

 

[MIGULZZ]

have rwd gus thought about running two spares up front with skinnies I'm not sure what the weight difference is but it came to my mind as I know older gm guys would do that too, but like I said not sure if there would be any benefit.

 

[brancky3]

have rwd gus thought about running two spares up front with skinnies I'm not sure what the weight difference is but it came to my mind as I know older gm guys would do that too, but like I said not sure if there would be any benefit.

It would help, but lack of traction is the first problem to solve.

 

[Revvdmedia]

have rwd gus thought about running two spares up front with skinnies I'm not sure what the weight difference is but it came to my mind as I know older gm guys would do that too, but like I said not sure if there would be any benefit.

This should help at the very least on the principle of less rolling resistance on the front tires. Rolling resistance on a prepped drag surface is a real thing.

 

[Whiteybird]

It would help, but lack of traction is the first problem to solve.

For RWD cars, we NEED drag radials. Street radials just won't do it. I went to the track with my street Nt05's and it was not pretty. Just look at the meat on the back of the Pureturbo car, looks like he's running a 305.

 

[Whiteybird]

have rwd gus thought about running two spares up front with skinnies I'm not sure what the weight difference is but it came to my mind as I know older gm guys would do that too, but like I said not sure if there would be any benefit.

Not safe as the tread isn't built for that type of speed, and you wouldn't pass tech.

I've been looking in to bigs/skinnies since we essentially have the same bolt pattern as Mustangs. Our brembo's just become an issue.

 

[brancky3]

For RWD cars, we NEED drag radials. Street radials just won't do it. I went to the track with my street Nt05's and it was not pretty. Just look at the meat on the back of the Pureturbo car, looks like he's running a 305.

He just posted a picture of his tire, it's a 275. I have 295s PS4S's but I haven't had the chance to do the brake snip yet (or anywhere I can launch, for that matter)

 

[Tonkabob]

You're at 1.80 60' now right? So get that down to 1.65 and you'll shave around 0.22s off your ET all else being equal. 11.62. Maybe 11.5x with the right weather.

My 11.86 had a 1.84 60 foot. If I can get an Angel like 1.60, I could see hitting 11.59s.

 

[Whiteybird]

He just posted a picture of his tire, it's a 275. I have 295s PS4S's but I haven't had the chance to do the brake snip yet (or anywhere I can launch, for that matter)

275? Jesus, in the video his offset must be nuts to be sat that far out. My 285 ET's didn't even look like that. I'm looking in to 305/40/18's for my next drag set up.