Difference with faster shifting?

[ZenkaiRacerDsM]

How much of a difference does it make to shift your car faster at the track? Also wouldnt a no lift shift be faster since the turbo will be kept spooling? Im not talking a bouncing off the redline no lift here. I am wondering because if it really doesnt make that big of a difference I want to take it easier on my car. Usually when Im racing Im balls to the walls. But daily driving is no boost granny time.

 

[olmytsi]

it makes a big difference. Its one of those thigns that separates beginner and advanced drivers or should i say racers. Learn to shift extra quick and u will notice a major difference specially when you have a big turbo.

 

[missouri_dsm]

I went from shifting super fast to power shifting and increased my 1/4 mile time by .3 seconds consistently.

 

[CanadianTSi]

I went from shifting super fast to power shifting and increased my 1/4 mile time by .3 seconds consistently.

You better go back to shifting super fast then

 

[evotuner]

I think he ment DECREASED
Shift-no-lift LOWERED :laugh: my e.t. .3-.4 tenths, turbo does not come off spool. You might want to make sure your tranny can handle it (i.e. built tranny) mine is not, but I'm a glutton for punishment!

 

[sleepyvr4]

some trannies are not up to it, but put some good synchroshift in there and you can shift a little faster. Piss on full throttle shifts, that's inviting disaster when it comes to dsm's. I always half throttle shift, and I've missed 2nd gear maybe 4 times out of forty passes this year.

 

[Tort9320g]

I went from 11.2-11.3s to consistent 11.0s by flat shifting. I think it's easier on the trans too. When you let off the gas, shift, and get back on you're jerking more whereas full throttle shifts are faster and smoother, therefore less shock to the gears. Then again what do I know, I'm only running low 11s on a stock trans

 

[missouri_dsm]

sorry, I meant decreased my time. thanks evotuner

 

[Syndicate13]

To the guys flat shifting, are you using any sort of device to retard the RPM while shifting? I'm asking for all the guys who don't have one and will think it's ok to just powershift and then ask why their tranny blew up since someone told them it was ok. I have not been to the track to see what kinda difference it makes on my car. My best time before was 8.5@83 in the 1/8. I'm heading to an actual 1/4 next week and I'll let you know how I do.

 

[Tort9320g]

no RPM limiters here, just a stock non-eprom ECU. Stock trans at 134k+ and holding strong so far.

 

[98eclipseRS]

when I flat shift/power shift/whatever the hell you want to call it, I let off the gas a little but not all the way. That way the rpms stay pretty close to what they were before you pushed the clutch in. I find that if you shift fast enough regardless of how far in you hold the gas between shifts the engine doesn't have much time to change rpm anyway so it doesn't really matter.

 

[Ryan86]

I'm like zenkai and baby my car because I'm always afraid something will break. At the track, I ran a 14.3@96 with a 1.96 60ft and shifted cautiously (slow enough to where I didn't have to muscle it in). If I did launch hard and shifted faster, what would my car be capable of as is? I don't mean to "bench race", I'm just curious.

 

[evotuner]

I'm like zenkai and baby my car because I'm always afraid something will break. At the track, I ran a 14.3@96 with a 1.96 60ft and shifted cautiously (slow enough to where I didn't have to muscle it in). If I did launch hard and shifted faster, what would my car be capable of as is? I don't mean to "bench race", I'm just curious.

Just get some balls and find out. We can't tell you what you might run, especially if it is something you are saying you won't do.

With you having a GSX, your 60ft's shoud at least be in the 1.80's, if you do that alone, you should be running high 13's.

 

[rhamlinii]

I know that in my car, it felt alot faster when I power shifted it. It felt like everytime I shifted it was like a brand new gear that ive never been into before. The bad part is that im a big guy and I only missed a gear three times. Every time I messed up my tranny, I got another one or had it rebuilt. The 1st time i did it I messed up my 2nd gear syncro. The 2nd time i did it. I detroyed my 3rd gear syncro. The last time i did it. I was racing a crx with a motor swap (B something with vtec) and I gave him five cars and the kick( or move) in a street race . I passed him in the top of 2nd but i didnt want him to spray in 3rd to catch me so i went to bang 3rd. I missed it bad and the shit fork bent, and broke off, It went all threw the tranny (messing everything up). I didnt know what happend and as soon as I let out the clutch all 4 wheels locked up causing me to go all over the road. I almost crashed my car that night. While waiting for a tow truck, It was like where 3rd gear should have been there was a hole and I couldnt get into any other gears. If there is something to learn from this, it would be I shouldnt of been racing on the street and YOU SHOULD NEVER POWER SHIFT YOUR DAILY DRIVER EVER. Thats my story so im going to have to go with it makes a difference but its not worth it.

 

[missouri_dsm]

:laugh: yea evotuner said exactly what I was thinking but he said it before I got to.

 

[evotuner]

I am not the smallest guy by anymeans (6'4", 265) and have done my share of mishifts, including going for the 3-4 shift, and hitting 3-2 instead (OUCH). AFC read 9129 RPM's, but luckily nothing ever happened. I power shift when need be, usually just on the track because I've never had that close of a race on the street (AWD ). I figure screw it. I have felt fortunate that I have had virtually NO mechanical problems with my car in the 2 years I have owned it, so if something breaks, thats OK. I am not going to be paranoid of my car breaking everytime I go looking for trouble, it's not worth it to me. If it breaks, fix it.

Now since I jinxed myself, my car will probably catch on fire next time I drive it.

 

[ZenkaiRacerDsM]

I baby the hell out of my car yes... But when Im racing like I said Im balls to the walls. I power shift every gear if I think the race will be remotely close. Otherwise Ill just shift fast. Like someone said If you shift fast enough the rpms dont change too much. Yes its higher but definetly not redline. I was just wondering if everyone else also thought that power shifting will decrease that tiny amount off the 1/4. I guess I was hoping it didnt just so I could go easier on the car. Oh well. I shift fast but by no means do I jam the bi*** into gear. You gotta feel it and be one with the car! :laugh: Corny as it sounds theres truth to it haha. I have yet to miss shift my car. Though Ive only had it for about 4 months now.

 

[CanadianTSi]

AFC read 9129 RPM's, but luckily nothing ever happened.

Bah you wuss, I hit 9470 once when I grabbed 2nd instead of 4th

 

[CanadianTSi]

To add to this when I ran 12.9 at 110 it was with a terrible 60' (1.95) and very slow shifting, the next month when I went back to the track I was lauhcing it hard (1.74) and power shifting and that netted me some 13.0's at 110...didn't make much sense to me

 

[green92gsx]

I speed shift with the no lift to shift style,with a msd dis-2 for the 2 step. In my 14b days my best without the dis-2 was a 12.66 at 110. The vary next time out with the new msd I ran my best of 12.44. Yes shifting is vary important for e.t.
My brother speed shifts without no aid of a revlimiter and doesn't lift either. You have to shift vary fast to do this method.
We both have Tre trannys though,so we can slam gears with confidence.
Here's some good speed shifting.

going for the 3-4 shift, and hitting 3-2 instead (OUCH). AFC read 9129 RPM's, but luckily nothing ever happened.

Been there never want to go back. I didn't record my rpm's but it buried my tach. Everything was fine until I got home. I had this noisey clack just lighly reving. Ended up backing five of the six flywheel bolts out a 1/4 in. Totaly ruined my aluminum flywheel.

 

[Ryan86]

Just get some balls and find out. We can't tell you what you might run, especially if it is something you are saying you won't do.

With you having a GSX, your 60ft's shoud at least be in the 1.80's, if you do that alone, you should be running high 13's.

Thanks for the 2nd part of your reply.... First part I was kind of expecting the rudeness...seems to be common around here.

I was planning to go to the track tomorrow (check the northwest subforum if you'd like), but its going to be raining.

 

[diambo4life]

I think the best idea is to have an already smooth shifting tranny. Mine is. It's bone stock too at ~98k miles. Make sure your clutch is adjusted correctly so you have complete engagement and disengagement. Basically, your tranny should not grind at all when daily driving. I have missed third gear only ONCE at the track with way over 100passes in the past 1.5 years. If you have a slight disengagement problem (especially on 1Gs) find the problem and fix it before you trash your synchros. I shift pretty quickly too and it does make a difference in your times. I once shifted first to second at 8k rpm. :laugh: Slides right in. Thank God for some nice BG-synchromesh and a higher rev limiter. My car will shift at any RPM flawlessly till 8k rpm and I don't exactly baby it when I launch. Low 1.7x 60's is my best so far but with a higher launch RPM (6000), I'm seeing 1.6xs next year.

If I did launch hard and shifted faster, what would my car be capable of as is? I don't mean to "bench race", I'm just curious.

You should be able to run a low 13 with a mid 1.7x 60'. I know I have run a 13.4 @ 96mph once. I think it was a 1.75 60'.

Bah you wuss, I hit 9470 once when I grabbed 2nd instead of 4th

Seems to be a big problem with 2Gs'. Kyle (NewB2DSM/Focal) did that on his 2G as well once. :laugh:
I think the reason your times were sucking even with a good 60' was due to your 1/8ET and MPH. Makes a big difference. I have the same problem on my car. It traps shitty in the 1/8th and I have gained ~25mph after that a few times. :laugh:

 

[CanadianTSi]

I think the reason your times were sucking even with a good 60' was due to your 1/8ET and MPH. Makes a big difference. I have the same problem on my car. It traps shitty in the 1/8th and I have gained ~25mph after that a few times. :laugh:

Yah my 1/8th mile ET sucks, my MPH is usally around 86-88 but me ET is usually 8.4 witch is killing me and I can't get it any lower for the life of me.

 

[evotuner]

You should be able to run a low 13 with a mid 1.7x 60'. I know I have run a 13.4 @ 96mph once. I think it was a 1.75 60'.

I think running 96 mph in the 1/4 is going to be high 13's on the average, especially with a mid 1.7 60ft.

Ryan86, go to dsmtimes.org to get an idea of what people run by mph. IF you can cut 1.6's (ain't that hard) you might squeek a low 13 sec. pass.

 

[diambo4life]

Yah my 1/8th mile ET sucks, my MPH is usally around 86-88 but me ET is usually 8.4 witch is killing me and I can't get it any lower for the life of me.

Try improving your 330FT (faster 1-2-3 shift). If you can get a very low 5.xx (or very high 4.xx), you should be in decent shape. Analyze your time slips with someone quicker (ET wise) and see where you are lagging.

If my car could trap 89mph in the 1/8th I would be in the 114mph range. I have trapped a best of 87mph but my clutch was slipping that day and lost the top end on that run.

evotuner...I dug up the slip and this is how it broke down.

Reaction Time: 0.9535
60 FT: 1.78
330 FT: 5.54
1/8 ET: 8.6410
1/8 MPH: 81.95
1000 ET: 11.2860
1000 MPH: 87.99
1/4 ET: 13.4288
1/4 MPH: 96.11

Don't need a 1.6x 60' to run a low 13 with that trap.