1/4 mile times again with flash and mods and slicks

[azian6er]

Ok i am just gonna come out and say it. I suck ass. here were my times in order. All my mods with new flash and boost at 8-9 psi and nitto drag radials on kosei 16 inch rims.

run 1 (at 22 psi in slicks) launched at 4800 rpms

rt------.388 (foul like whoa)
60 ft---2.606 (wheel spin like whoa)
330 ft.--7.10
1/8 et---10.526
1/8mph--72.91
1000 et---13.417
1/4 et-----15.879
1/4 mph---91.43

Run 2 with 18 psi in slicks launched at 3800 rpms

rt-----.590
60----2.303
330---5.895
1/8 et--9.555
1/8 mph--74.99
1000 et----12.366
1/4 et-----14.760
1/4 mph---93.92

Run 3 with same psi launched at 4K rpms and hit fuel cut one time

rt----.532
60----2.289
330---6.370
1/8 et---9.678
1/8 mph--74.40
1000 et---12.494
1/4 et----14.889
1/4 mph---94.10
( i think this would have been my best run if i didnt hit that damn fuel cut)

run 4 same psi lil lower boost (.2 psi)

rt-----.883
60----2.349
330---6.395
1/8 et---9.710
1/8 mph--74.12
1000 et---12.545
1/4 et----14.964
1/4 mph----93.20


I ran with Joes FPR kit and also i still have my high flow fuel pump in there.
Should i try to swap the pump for the stock one and see what happens, or should i leave it?

On a side note, the flash worked like a charm. Everything is 10X smoother and i especially noticed it at night time when it got cooler out. No more stumble, but what the F&&K is up with my 1/4 mile times guys???

HELP me those running low 14s with fewer mods then me.

---bryan

[jonnydoe48]

driving..your variance is crazy.

[azian6er]

what do you mean, like i am inconsistent or something??

This was the first time i ever ran slicks so on the first run i didnt know what rpm to launch at so i launched to high and spun like shit.

All my other runs are pretty close together though, all 14.7, 14.8, 14.9s.

Explain yourself a bit more please. Thanks.


--Bryan

[JDM Sam]

get someone who has a low time to show u how they drive and then emulate their technique. did u heat up ur drag slicks prior to launching? u have to burn out drag slicks before launching or they wont hook cuz theyre not warm. try running 25 psi burn out, then launch at 3500 to 4000. pull the clutch out faster than u would normally with street tires but not where it just sits and spins. if u cant do that at that rpm range try 3000. any lower u will bog.

[JDM Sam]

also i would get a wide band and see how ur a/f is running. compare the a/f mix with the stock pump vs ur current setting. if you dont have access go to a dyno with one its only around $60. if u can pay to go the track a lot a dyno session will help you with your situation.

[azian6er]

so if i dont have a wideband o2 sensor, they should have one at the dyno correct? But they cant really "tune" my car unless i have some sort of tuning device such as a stand alone emanage etc. correct?

I want to dyno and see where im at.
Thanks again.

--B

[JDM Sam]

no u have to check and see which dyno has a wide band reading. most dynos now have it but check to make sure. yea u cant do anything tuning wise but the wideband can help u decide if ur fuel pump is hindering or helping ur power output by lookin at the a/f mix between the 2. bring some tools to swap out the pump on the dyno tho cuz onces its strapped down ur gonna have to do the changes while its on the dyno.

[BoOsTiN]

This may seem a little weird but ..
try running the nitto's at a higher pressure.
Its been a few years since ive ran on those but I remember myself and some friends felt they grabbed better at higher psi than lower. Im thinkin in the mid 30's ?

[azian6er]

i ran the nittos at 22 and they spun like shit. Maybe i just launched too high.

--Bryan

[LinuxRacr]

Are you really running 18 PSI?

[azian6er]

yes 18psi in the front slicks. Maybe the tire pressure was too low in the front and my high end was suffering because of that. Im gonna try again at like 22-24 psi and just launch a bit lower and see what comes of it.

--Bryan

PS i ran 45 psi in the rears.

[goonsquad]

This is just from memory but aren't these times much better than your last times? If so I would be pretty happy with a big improvement. Obviously better times will come with more practice, not just mods.

[azian6er]

umm yeah to a certain extent. I was running like 14.9s with my last 2 runs, but now since i got my flash and slicks i was hoping for like 14.1 or 14.2s.
My friend with an rx-7 took a whole second off his time with slicks so maybe i was expecting too much. Oh well 14.7 is still better than the stock 15.1 i guess. I have mods though and that is what bothers me. Oh well test and tune i guess, test and tune....

--Bryan

[InsidiousMSP]

You're still trapping 93-94mph (what the car should do stock). The ETs will not get much better. Something is wrong with the car... it has to be the fuel pump, unless maybe your boost gauge is wrong and you're really running 5psi or something. (doh)

[ForceFed]

Hmmmm???
I am not sure what you are doing wrong except for the fact that you 60 ft times are still wayyy toooo slow especially with slicks!
I have pulled 2.3 60 fts on the stock rims and tires.I would expect to see likw a 2.2 or better on slicks.Also,your trap speeds are real slow?
Where are you shifting at?This may be where your problem lies.Are you running the car to near redline?If not and you are shifting early ,then this is killing your trap speeds and ET.I run all the way to redline every shift(almost) and pull traps of almost 100MPH.I have my best time to date at a 14.3 but hope to better that tonight as it is a lot cooler out now.
Just a couple of things to think about,
Matt;)

[Imissmy3rdgen7]

WOW, I thought you were saying you are running 22-24 psi BOOST!
LOL, nevermind.....tires hahah geeez

[jred321]

i've got an idea, change back to the stock fuel pump

[xtrememps]

I want 22 psi of boost =)

[Darin]

Originally posted by ForceFed
Hmmmm???
I am not sure what you are doing wrong except for the fact that you 60 ft times are still wayyy toooo slow especially with slicks!
I have pulled 2.3 60 fts on the stock rims and tires.I would expect to see likw a 2.2 or better on slicks.Also,your trap speeds are real slow?
Where are you shifting at?This may be where your problem lies.Are you running the car to near redline?If not and you are shifting early ,then this is killing your trap speeds and ET.I run all the way to redline every shift(almost) and pull traps of almost 100MPH.I have my best time to date at a 14.3 but hope to better that tonight as it is a lot cooler out now.
Just a couple of things to think about,
Matt;)

Exactly - I've cut 2.2s in my PGT on street tires - 1.9x on Drag radials.

This guy needs to learn to launch - that'd drop him close to the 13 second mark, I'm sure.

[InsidiousMSP]

Originally posted by Darin
This guy needs to learn to launch - that'd drop him close to the 13 second mark, I'm sure.

Not with 93mph trap speeds. He should be trapping closer to 102mph. Run 15-16psi on 116 gas and I wouldn't doubt 106mph. That's very low 13s / high 12s in a 2950lb car with good traction. But obviously something is wrong with his car, his trap should be much higher.

[goonsquad]

I am only trapping 92 MPH at 10 PSI with an ET of 14.875 and about a 2.3 60'. I don't see going much higher than this with my current setup.

[ForceFed]

Originally posted by InsidiousMSP
Not with 93mph trap speeds. He should be trapping closer to 102mph. Run 15-16psi on 116 gas and I wouldn't doubt 106mph. That's very low 13s / high 12s in a 2950lb car with good traction. But obviously something is wrong with his car, his trap should be much higher.

I'm Sorry?
DID I HEAR YOU RIGHT? Low 13's high 12's????

I Think not in a MSP! The MSP does not have the traction nor the low end grunt in stock or increased boost form to provide those kind of times.I have run at 15PSI at the track and this is where I got my best times and they were not in the 13's as of yet.
Granted that with a true set of slicks,I know it would be done on my car but he obviously needs to work on his technique as an all around problem unless something is truely wrong with his MSP.
I think that some of your mods are not working well together.I have yet to run on race gas as in my car it has not been needed as I have no signs of detonation at all.I have the thing boosted to the "CUT" at almost all times.
Every time I go to the track ,I street tune it on the way there to assure that I am at maximum boost when I get there without hitting the cut when I go to 3rd or 4th gear while going down the track.As conditions change at the track I will make slight adjustments to compensate for them.If it starts to cool dramatically,then I will back the boost down.I have yet to see the need for the race gas as I have no detonation.I can drive really well too and I don't see the MSP hitting the low 13's or the 12 's anytime soon without serious internal mods and a full stand alone engine management.
My .02 cents
Matt

[InsidiousMSP]

Originally posted by ForceFed
I don't see the MSP hitting the low 13's or the 12 's anytime soon without serious internal mods and a full stand alone engine management.

Why do you say that? Forget ETs for a second.

So far the highest trap speed with basic mods I've seen here (with slips & witness) is 104mph by Wesman. That was on stock tires, stock intercooler, with a highflow cat, stock fuel sys, half pump & half race gas. Imagine with drag radials, a straight pipe, and a FMIC w/ co2 spray. 106mph+ easy.

Trap speeds are usually consistant and don't change much based on a bad launch. 106mph is more than enough to hit low 13s or even high 12s in a 3,000lb car, with drag radials and a good driver. You can call it bench racing, but it's just plain physics. To trap 106mph in a 3,000 car, such as ours, you NEED atleast 270-280whp (~310hp crank). That means, an MSP that traps 106mph is pushing somewhere around that number.

For comparison sake, look at other cars that trap 105-106mph stock. Most are much heavier. A stock 300whp Supra TT for instance can go deep 13s @ 105mph. And just like our car, a bad launch on that Supra will muster a 14 second ET @ 105mph. That car weighs in at ~3600lbs with driver. That's nearly 600 more pounds than our car w/ driver. 600lbs will make a huge difference in ET.

We have the potential with the stock turbo, block, and ecu. It's only a matter of time.

[turboge]

Well the NT555's aren't really that great of a "Drag Slick" I pulled better 60' times on Falken Azenis. However I heard that the NT555's should run as low as 6psi to get the best traction from the person I borrowed them from.

Work on slipping your clutch more and bring your 60' down to a 2.0 or 2.1, once you hit those you will start seeing some better numbers. However it is true that if your Trapping only 93-94mph your ET's will not be varying much more than what they are at.

I was trapping 101mph with 2.14 60' and running 13.76 with only 205whp in my other protege.