upsetting 1/4 mile time

[GSXdsm97]

I cant break the 15s WTF, this is ass.

MODS-N1 turbo back, injen intake, 1g BOV, walberro 255, FIC 650cc, dejon MBC, DSMlink, eprom ecu, AEM wideband, B&M short shifter, eibach sport line kit, GR2 struts,

why cant i get into the low 14s or even high 13s. i should be there with these mods. my launch was at 3750, i was at 12.671 at the 1000feet. my fuel trim is at 4.9 and i gave it more air, wideband reads at 13.4 to like 14.0. anyone have any suggestions on what to do.

 

[bacalhau16]

Ofcourse your getting better MPG, your car is running lean. I wouldnt be surprised if your car is pulling some timing on you, thats why it is slow.

Sounds like you need some tuning. Good luck.

Shifting at about 6k is good. I would think shifting at 4500-5000 RPM is pretty low. I believe they were discussing where you should be launching. I would say a 4k quick slip is pretty good. It does take some practice though. If you heat it up and it starts to slip, stop practicing for the night.

 

[Boost92awd]

Sounds like you need to work on your driving skills and get a better tune.

 

[LandoAWD]

Over-running the stock FPR, lean tune, bad 60ft.

 

[SOADweskey]

Get an EGT gage and you will never run 14.0 AFR under load. I wouldn't even drive my car if it went that lean under load. The other day the vacuum line came off of my stock FPR and I got on the throttle and my wideband said 14.X AFR and my EGT said 1188 *C.

Tune your car or pay some one to do it before you kill it.

 

[GSXdsm97]

thanks for all the help. what should my wideband read when im under a full load, also im not a bad driver, well off the start i am i will agree with that. but than again the start is the only thing that matters. o and whats an EGT gauge

 

[SOADweskey]

thanks for all the help. what should my wideband read when im under a full load, also im not a bad driver, well off the start i am i will agree with that. but than again the start is the only thing that matters. o and whats an EGT gauge

If you are running on pump gas then rough guidelines are 11.0 for 91 Octane (California sucks) 11.5 for 93 Octane.

Every car is different but if you aim for 11.5:1 I bet your car will pull much harder than it is now as a result of not pulling timing.

 

[Boost92awd]

thanks for all the help. what should my wideband read when im under a full load, also im not a bad driver, well off the start i am i will agree with that. but than again the start is the only thing that matters. o and whats an EGT gauge

An EGT gauge is an exhaust gas temperture gauge. As for the A/F you want to be in between 10.5 and 11.5 during WOT.

 

[kawboy]

I sent you a PM.

And EGT = Exhaust Gas Temperature (gauge), its usually tapped into your exhaust manifold. You'll be fine with just a wideband a/f gauge.

 

[SOADweskey]

Sorry I wasn't more clear on what an EGT is. And you don't need one if you have a wideband but it does add an extra warning for when things go really wrong. But if your Air/Fuel ration is where ti should be then the exhaust temperatures should be alright.

 

[GSXdsm97]

thanks again guys once again this is the reason why i bought a DSM so much help from everyone ill go try and get more fuel to my beast. thanks guys

 

[My98slvrGSX]

isant a stock qt time like 14 something?

 

[SOADweskey]

isant a stock qt time like 14 something?

Under optimum conditions with a profesional driver. You will never know what your car would have run stock compared to what you run modified unless you ran it in both states. 1/4 mile times involve so much more than the car. Driver, air-temp, track temp, octane rating of fuel, head wind/tale wind. There are to many variables to quote a time you haven't personally ran to compare to what you are running now.

 

[My98slvrGSX]

yea i figured that. but i didnt think he would have been a whole second slower even after the mods he had. the point i was trying to make is that it might have been the driver, im not hating on him or anything, i know im not a professional either.

 

[SOADweskey]

I think in the case of th OP he could be launching the car better (so could I, I should be hitting 12's but 1.9 60' aint cutting it) but his tune is hurting him more than the driving. Once that all gets sorted out 14's shouldn't be a problem. Good driving and good tune and 13's (tough with the t-25 but possible)

 

[My98slvrGSX]

agreed

 

[talon4lifetsi]

I ran a 14.8 with my 1997 tsi fwd auto. Mods where injen intake, 2 1/2 turbo back, t-25, Apexi avc-r, and greddy type-s bov. Also i was running 22psi with the turbo maxed out. I know this not safe for my motor but only 2 runs like that. This was about 4 1/2 years ago at atco. With your mods you should push mid to low 14's easy.

Good Luck!! Len

Forgot to add I know everyone was sayin to shift around 5500k but when i ran that time mine was shifting at 6800k to 6900k. And this was with an auto. The gears are longer in a auto then mannual since it's a 4spd trans. At 5k i was at 22psi by the time i reached 6800k i would be around 13psi. Im not sure what from this can help you but i hope it does.

 

[VPrime]

I ran a 15.4 With T25 at almost 15psi, intake (ebay filter/pipe), Upper intercooler pipe, ACT211 clutch.. I was pretty upset about that, but not so much after reading this thread

 

[SOADweskey]

My first time at the track had me in the mid 15's as well with my t-25. It didn't help that it was 110 degrees at the track and everyones car was hating life.

 

[97GSTAUTO]

Over-running the stock FPR, lean tune, bad 60ft.

Ding Ding Ding Ding we have a winner!!

Walbro 255 w/o FPR , t-25 w/650's ?!?!.

 

[white_dsm]

You'll get it, just take these guys advice and apply it.

 

[disciplekyst]

About pulled timing,
I was wondering if only knock could pull timing, or if also a lean fuel ratio could?

Actually, I was wondering if only a lean fuel ratio (without knock if possible) could be monitored by the car and cause a pulled timing?

 

[RawrImAMonster]

I don't think the car has anything programmed into it that actually pulls timing JUST because of a lean AFR. However, a lean AFR is what causes knock in a lot of situations so, yes, effectively it will pull timing if your AFR is too lean.

 

[LTUDSM]

what i think is that: that there is some real problems with driver.....
i remember my day at the track,same day(morning i put 550's and installed Maft-GenII .didn't adjusted anything,well all i did,just adjusted the main scale.so we went to the track (it was a mitsubishi day at e-town last year),so my1/4 time was 14.8 And im FWD ,with a regular tires .

 

[GSXdsm97]

yea well i want to hit low 14s maybe like a 13.9 than im buying a trubo. but as for my fuel i got it down to about a 11.4, so thats better, i took my launch at 4k, and just on a street from a complete stop i felt a difference. the car pulls kinda hard off the line now. as for a FPR i was told that it wouldnt make a difference in a 1/4 mile time, just my MPG and maybe a little at idle. but i could be wrong.

 

[LandoAWD]

You're probably not knocking due to the lean condition now! Good work.

FWIW, an AFPR will straighten out the fuel trims and make fuel delivery work as designed.