Hi all,

Ive a 93 wrx with fmic,20g, 550cc inj. simtek, fuel pump, gtspec headers etc. My santa pod times are all around 13.2 or 13.3 should my times be better? I give it full board lauches holding revs to 5500rpm then lauching.

Ive put the info of one of my runs below for info.

1.892 - 60 ft
5.493 - 330 ft
8.470 - 1/8 et
81.38 - mph
10.968 - 1000' et
13.205 - 1/4 et
102.40 - 1/4 mph

I did have a small blowout at the gasket of the header side of my up pipe so not sure if that would affect it much?

all info is appreciated.

drew

 

i just did a 1/4 mile in my 1997 uk turbo running 20g and fmic autronic ecu fuel pump 550cc injectors and got 12.96 best run usually about 13.1 so you seem dead on too me mate.

taking the launch control off next time apparently that should reduce times woohoo

 

with only 200 at the wheels i ran 13.63 at 104.95
When i go next it'll either be 280 or 290atw so im hoping for resonable 12's so i'd say you should be getting a bit quicker than that.

 

The exhaust leak certainly won't help as the larger turbo will be slower getting on boost enough as it is without loosing some gas!

Simon

 

i normally get 12.8 with my 20g, best i have had is a 12.2.

how are you launching?

 

my launches are pritty simple ones. I hold revs at 5500rpm then when light goes green up comes the clutch and we're away.

 

i think you could do better than that m8

 

how does everyone else launch? or does anyone have any ideas where i can improve.

 

The 20g is capable of running high 11s 1/4mile.

Blowing headers/uppipe will effect power.

Try launching at different RPMs and with different tyre pressures.

You want the wheels to spin up to prevent bogging but not too much. Dropping tyre pressure = more grip.

 

Invest in a Gtech gadget (or similar) for practice on a private road.

 

You could try flat shifting between 1st and 2nd........

I managed to get my p.b down to 11.9 using this method and side stepping the clutch.......dccd set to just before orange light ..

 

Sounds like a problem with technique. I've never taken my Scoob quarter miling, but I'd be gutted to get a 13.xx. To put it into perspective, my best run at the Pod in my old turbocharged Clio 16v - so front wheel drive remember - was:
60ft - 2.298
330ft - 5.900
1/8ET - 8.779
1.8MPH - 84.71
1000ft ET 11.196
1/4ET 13.359
1/4MPH 107.36

Perhaps not quite what you wanted to hear, but that was running at around 230bhp, admittedly at around 950kg but still, I could never get the 60ft out of the 2 second bracket. I always reckoned the launch was what made the time, simple as that. Get the launch spot on and the times will come tumbling.

 

Dont just hold it at 5500rpm as your start to loose boost, on and off is the best way and dont race the person next to you.... just wait until your set and go

 

sorry for stupid question but what does flat shifting mean/involve?

thanks for all the info so far.

 

Not backing off the accelerator during gear shifts

 

so its mainly down to gettin my launches sorted then. if i get them sorted could i get my times down much?

 

Yes, with the correct launch you should be able to make high 12s.

The terminals are on par with a 270bhp (ish) car, so get your blowing headers/uppipe sorted first.

 

cheers everyone for the help and info.

Since those times ive now got the uppipe gasket replaced and it seems fine now and ive also fitted a P1box and diff for the extra strength.

Ive seen alot of lightwieght pullys about recently do they make ny real difference to acceleration?

drew

 

On the same topic, Bob mentioned getting a g-tech or similar... How's everyone's experiences with these against strip timing equipment?
Sorry to hijack....

 

if you have a simtek, invest in the launch control function.

 

I used to run full throttle gearchange as well. I reckon it probably netted 0.2 seconds at most, but worth a go if the quarter miling bug has bitten.

 

Already been said. Don't hold the throttle at 5.5k, bring it up and blip the throttle. Then dump the clutch and away you go.

I've got launch control, it's called my right foot.

 

my 93 wrx...andyf 20g...550s...apexi boost and ecu....similar spec to you!

11.9 was my best time with a 1.8 60ft.

agree with micky...my launch control is me right foot too...

do a few runs that ya comfortable with then do a flat out launch mate...you win some or ya loose some....

 

cheers guys, ive got a simtek fitted with al & lc but with the lc on the times were alot worse as its set to 4500 rpm and it kept boging down so went back to the old fashion way.

at least i know its not the car but my crap driving thats holding me back

 

Is that it? Mapped!! I'm only .5 of a second behind you with a ?lesser? car. (all tongue in cheek, jest only.)

330bhp classic -v- 480bhp blobeye

65be164d.flv - Video - Photobucket - Video and Image Hosting

Or 330bhp wrx -v- 434bhp Type R

5fa653ed.flv - Video - Photobucket - Video and Image Hosting

You win some, you lose some. I won both of them.

Practise staging, traffic lights may help; and if you're wanting to beat someone, go on yellow. By the time you dump the clutch it'll be green.

 

ask your mapper to increase the revs on the launch control, had to test a few settings on mine.

Sorted it for the road tyres, but as had to raise it to 6000rpm when we fitted the 888's.

 

I had a 13.4 in a standard 240bhp wrx - had a 3" exhaust and that was it. Might have got more, but snapped the gear linkage due to an over exaggerated throw into 2nd. So only got 1 bogged down run and got the 13.4

 

Again, this is general advice, and may not suit the 4wd system very well, but the most efficient launch tends to be with a little bit of chirp from the tyres - i.e. a tiny bit of wheelspin momentarily then you dig in and go. I.e. err on the side of a high rev launch/wheelspin rather than low revs/bogging down.

 

i must be bad if people are gettin nearly the same times with standard cars

And i thought my times wernt bad even with a 60ft time of 1.89.

with a 60ft time of 1.89 i didnt think i could improve that much

 

You would be aiming for low 1.7s or high 1.6s for the 60ft.