Dash Hawk 1/4 mile results

[laloosh]

Ok so i was bored and tried this thing out. As you know i ran a 12.90 @ 111.14 at a real track. Since then ive tuned the car and set the a/f ratio to hover right around 11.8 and added 2 degrees of timing. My car felt like it picked up so i do two pulls. The road was straight

First pull
60: 2.20 60 @ 36.04mph
1/8th: 8.51 @ 90.01mph
1/4: 12.89 @ 114.95mph

Now this is a lil too good to be true lol but hell if this is accurate ill take it!

2nd pull
60: 2.47 @ 35.42 (launching over rumble strips sucks lol)
1/8th: 8.77 @ 90.10
1/4: 13.06 @ 116.2

Once again, lol i feel that its a lil optimistic. I doubt a good a/f ratio and some timing picked up 4-5mph in the top end and 3mph in the 1/8th. Hmmmmm anybody try playing with this yet?

 

[Haltech]

What ya need to do is run that thing at the track to see exactly how far it is off. But hell, with the spirit of Christmas, ill give ya your 12.8 (first)

 

[laloosh]

What ya need to do is run that thing at the track to see exactly how far it is off. But hell, with the spirit of Christmas, ill give ya your 12.8 (first)

tracks are closed till march....lol this sorry attemp is the best i could do. woot for 12.89 ftw lmao

 

[FRUCTOSE]

Ok so i was bored and tried this thing out. As you know i ran a 12.90 @ 111.14 at a real track. Since then ive tuned the car and set the a/f ratio to hover right around 11.8 and added 2 degrees of timing. My car felt like it picked up so i do two pulls. The road was straight

First pull
60: 2.20 60 @ 36.04mph
1/8th: 8.51 @ 90.01mph
1/4: 12.89 @ 114.95mph

Now this is a lil too good to be true lol but hell if this is accurate ill take it!

2nd pull
60: 2.47 @ 35.42 (launching over rumble strips sucks lol)
1/8th: 8.77 @ 90.10
1/4: 13.06 @ 116.2

Once again, lol i feel that its a lil optimistic. I doubt a good a/f ratio and some timing picked up 4-5mph in the top end and 3mph in the 1/8th. Hmmmmm anybody try playing with this yet?

I think you could gain that much... May be a little wishful thinking! Amazing what a simple tune can do.

 

[laloosh]

Another thing that i just figured out.....on the 60 foot times, I happen to be shifting right befor i hit the 60 foot mark, which absolutly sucks if its true. I guess time to look at 330 mark in real life.

 

[redrocketz]

They are definitely not 100% correct wether they are better or worse who knows. There is a reason that the timing equipment at a drag strip costs thousands... You still have a quick car no doubt.

 

[laloosh]

well from what i have read about these gtech type things is that generally they are pretty accurate when it comes to et but they are optimistic in the mph department, which sucks cause mph is all i care about lol. Trust me im not saying my car is trapping 115mph, im just posting my results and saying that they are optimistic, it would be kewl to see if memebers who have this would find a straigh strech and test it out and compare it to their real slips.

 

[driver311]

I bet on slicks your car would trap 113mph no problem. You would be able to take advantage of the 1st and 2nd gear acceleration.

 

[guy_incognito]

From what I understand, the dashhawk is more prone to error than the gtech. Dashhawk uses the telemetry from the computer, whereas the gtech uses an accelerometer. The downfall of the Dashhawk is with wheelspin; since the computer thinks it is moving, when in reality you are just sitting in place. Also the dashhawk isn't as accurate because it isn't getting info as quickly, it is dependent upon the refresh rate of the information.

Overall it looks like the times should be fairly accurate, but those MPH readings may be a bit off. Still, that is some impressive stuff.

I've been looking at getting a Dashhawk, if it really is that accurate it is all the more tempting. I've just been hoping that the nitrod unit will become compatible with our cars.

 

[laloosh]

well my buddy just let his friend with a wideband boor the dash hawk for the a/f reading. DEAD FUCKEN ON. Which made my night.

btw when i say wheelspin, im not standing in place during a burn out, i do know how to drive, the the 1-2 shift that just spins and ride it out till i feel it good enough not to bog 3rd

 

[LENNY127]

i use a g tech and its pretty accurate within 1.5 mph and .25 seconds in the 1/4. the thing that i didnt dig about the dash hawk is that it reads everything of your cars computer , so if your tires are taller/shorter the mph will be off , if the car spins the tires how will know if the 60 ft times weren't the result of 2 or 3 tire revolutions spinning and only 57 ft of actual moving forward etc etc....i am sure the g tech has its disadvantages as well but for a more realistic 1/4 measurment i think its best

 

[laloosh]

i did a run last night with traction control on, slightly uphill the entire way. 12.97 @ 114.3, so i dunno lol

 

[driver311]

well my buddy just let his friend with a wideband boor the dash hawk for the a/f reading. DEAD FUCKEN ON. Which made my night.

btw when i say wheelspin, im not standing in place during a burn out, i do know how to drive, the the 1-2 shift that just spins and ride it out till i feel it good enough not to bog 3rd

thats exactly how you are supposed to do it. people always are making that mistake shifting per rpms vs. momentum. Thats why guys like me and you put out good times and others suffer with the same mph but alot higher et.

Ps. quit being a pussy, go to florida when you get your dr's and runs some low 12s.
Dont you hate my ass? LOL

 

[Falconx84]

my understanding is that as far as trap speed goes, dashhawk/gtech use the top speed whereas at a strip is an avg of speed recorded over the last 50-60 ft or so

I really have no idea for sure, but a few yrs ago when one of the big mags tested some of the performance meters I think they mentioned that. With that said, I've never used my dashhawk for 1/4 mile and I've never been to a drag strip before

 

[All4BeSpinnin]

These devices tend to be optimistic especially with trap speed. At the drag strip your trap is an average over the last whatever feet so it's going to be lower than what these are reading.

 

[jeffmsp]

the temperature makes a big difference too. the difference between -5 and +15 could throw the numbers off a noticeable amount.

 

[nypest]

love my dashhawk!

 

[LENNY127]

I think theyre a decent alternative for gauging performance upgrades without having to go the dragstrip (hypothecatilly speaking if one did such a thing)

 

[MSMS3]

my understanding is that as far as trap speed goes, dashhawk/gtech use the top speed whereas at a strip is an avg of speed recorded over the last 50-60 ft or so

I really have no idea for sure, but a few yrs ago when one of the big mags tested some of the performance meters I think they mentioned that. With that said, I've never used my dashhawk for 1/4 mile and I've never been to a drag strip before

Pretty close to right on trap speed theory. And on accuracy of the G-Tech. I don't have a DH, but I do have a G-Tech Pro RR. G-Tech is an accelerometer. It does measure your trap speed as an absolute at the very end of the quarter mile. The drag strip timer has a timing section that calculates an average over the last 60 feet. That's why G-Tech tends to run 2-3 mph higher than what a strip ticket shows.

My G-Tech on another vehicle has been consistently within one tenth of a second of the strip timers. It does make a difference in setting up the G-Tech that you select the same amount of staging depth. This is adjustable. Just like on the strip, staging shallow gives you lower ET because you start moving before the timer starts, and staging deep gives you lower ET, but starts you closer to the finish line, so you may get a better hole shot.

Now, my G-Tech is not working right with the MS3. RPM is all over the place on setup and will not settle down. I'm contacting the mfg about this to see what needs to be done, maybe a reflash. If I can get it working, I'll post some charts with its electronic time slips and even its electronic dyno runs. That will hold me until the strip here opens in Spring.

 

[coyfish]

This post is 2 years old !