My car is slow...

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turbo2nr
Posts: 1810
Joined: Wed Sep 28, 2005 3:53 pm
Car: 97 240sx (kouki)

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went to e town yesterday.. i basically embarassed my self..

15.3@93.. my car sucks my times sucks im soo disappointed. i wana sell my car i mean i spen 3k into this turbo setup over 1yr sourcing parts and about 5 months installing and tuning and the best f*kin time i pull is a 15.3..

this blows.. i wana kick my car. but mainly my self for not being as good as i taught.. btw i was running 5psi on a auto transmission.

i tried to run on 8psi but the tack did record a time for me. i could of swore when i look at the needel crossing the line it was close to 100..

i dont know ..


VeloceDrift
Posts: 300
Joined: Thu Nov 02, 2006 12:52 pm
Car: 1993 Nissan 240SX S13 coupe
1995 Nissan KA24DET

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5psi?? why dont you turn it up??

i was runnin 7psi and got beat down hill by a stock honda accord i had a bad knock sensor though so my car was all ****ed up

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Craving4Boost
Posts: 1495
Joined: Sun Dec 19, 2004 10:44 am
Car: 91 240sx fastback

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whats your trap speed? 5psi is childsplay..turn that boost up

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myRed240
Posts: 627
Joined: Sun Jan 12, 2003 9:42 pm
Car: '95 Nissan 240SX with a KA-T!
'07 Audi A3 2.0T DSG
'11 G37S Sedan
Location: San Diego

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Yes, 5 psi is nothing, especially on an AT. I run 7 psi daily(on my AT), and anything past 85 mph, I can't really feel the car pulling anymore. Turn the boost up, and you'll be much happier.

Don't give up hope so fast.

Florida240sx
Posts: 11114
Joined: Thu Jul 01, 2004 7:17 am
Car: 1993 Nissan 240SX Hatch 5spd
2012 Nissan Altima S coupe 2.5
Location: DeLand FL

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What was your 60ft?I ran a 14.4 at 10psi with a BLOWN HG 2.8 60' 106 was my trap speed What size turbo you got? You manually shifting or leaving in drive with OD off?What's your A/F ratios?

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turbo2nr
Posts: 1810
Joined: Wed Sep 28, 2005 3:53 pm
Car: 97 240sx (kouki)

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trap speed was 93mph

i was manualy shifting but not letting off the gas 1-2-d. od was off shifting around 5600 ( i hear the car stop makeing power after 5500 b/c of cam shaft design)

my 60ft was 2.5, reaction time sucked really high. 15.3@93.

i think my trap speed was decent. i was expection hi 14's at least.

myRed240 - that weird after 80 the my car feels like it moves fast i have no low end form 0-50 sucks 50-80 is decent pickup after 80 the damm car pulls hard to 120+. i have no problem with top end. i think the turbo may be a little to big for the 1/4 mile

its a t04b (around a 52trim) .69 comp/.58 turbine. i think the turbine is a p trim.

im going to give my self untill end of summer if i dont hit mid 13's by end of summer ill sell the car.


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Brandon93240
Posts: 511
Joined: Mon Feb 26, 2007 11:41 am
Car: 1993 240sx

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Man thats a horrible time. I ran a few 15.1-15.4's with just a few mods. I ran 15.6's bone stock with a 5 speed of course. Even when I first turbo'd my car in 99 with a fmu at 7 lbs I managed a 14.2-14.4 with a big system on my 18" rp01's I got from Duy. What kind of tuning do you have?

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myRed240
Posts: 627
Joined: Sun Jan 12, 2003 9:42 pm
Car: '95 Nissan 240SX with a KA-T!
'07 Audi A3 2.0T DSG
'11 G37S Sedan
Location: San Diego

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turbo2nr wrote:myRed240 - that weird after 80 the my car feels like it moves fast i have no low end form 0-50 sucks 50-80 is decent pickup after 80 the damm car pulls hard to 120+. i have no problem with top end. i think the turbo may be a little to big for the 1/4 mile

its a t04b (around a 52trim) .69 comp/.58 turbine. i think the turbine is a p trim.

im going to give my self untill end of summer if i dont hit mid 13's by end of summer ill sell the car.
Oh, okay. I wasn't aware of what Turbo you were using. I'm running a GT32, and at 7psi, I know I'm out of the efficiency range when I'm at speeds of 85+mph. It pulls real hard from from a stop (if I brake boost it) all the way until about 85+mph. I can't wait to up the boost here in the next week or two...

Can you list your set-up? I still recommend upping your boost, as I'm sure you're not in the efficiency range either. Or, maybe it's not the best combination on your AT without some sort of launch control.

I understand the way you feel, but don't give up too soon!

If you do sell the car at the end of summer, sell it to me for a great price

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turbo2nr
Posts: 1810
Joined: Wed Sep 28, 2005 3:53 pm
Car: 97 240sx (kouki)

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im running a safc and pulled timing 4 degrees form the dis cap.

that what i dont want to boost to hi b/c of fears of not having timing control.

by end of summer i should be 5speed and fmu controlled my my emanage ultimate.

with the auto if feels like its in the constant in the wrong gear... i wont give up hope yet..

im pertty sure on my first run that didnt get recorder i hit at least a 97mph trap.. the needel was hitting 100 after i crossed the line

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coolbone28
Posts: 297
Joined: Tue Dec 21, 2004 6:00 pm

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I might be wrong here, but isnt 4* of timing a little much for only 5 lbs of boost?

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Brandon93240
Posts: 511
Joined: Mon Feb 26, 2007 11:41 am
Car: 1993 240sx

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Yeah it does. I left mine alone when I was at 7 lbs with fmu. Honestly Idk if I'd go the emanage route, I'm not knocking it or anything just for the money you could get an enthalapy or efi specialist and be out alot less $, plus either way it goes you'll probably have it dyno'd right? If I were in your shoes I'd do the 5 speed swap, stated above ecu with some 555's and z32 mafs, have it fine tuned with the afc at about 15-17 lbs of boost and call it a day.

Florida240sx
Posts: 11114
Joined: Thu Jul 01, 2004 7:17 am
Car: 1993 Nissan 240SX Hatch 5spd
2012 Nissan Altima S coupe 2.5
Location: DeLand FL

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At 7-8lbs of boos tpeopelonly retard timing 2 degrees if running 93 octane. Timing is a big key in turboed cars your car will come alive with those 2 extra degrees

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turbo2nr
Posts: 1810
Joined: Wed Sep 28, 2005 3:53 pm
Car: 97 240sx (kouki)

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i wanted to be over safe so i went 4 degrees just to make sure.

as for my fuel system i have msd 52lb, top feed rail/ -8an fuel lines, aeromotive fpr, warbrow 255 intank.. i have more then enough fuel . my problem is that i over engineered my car for such little boost

on a side note i know why i pulled such a ****ty time my turbo is on its way out shaft play and its scraping my compressor housing.. that would explain why boost takes so long to come 4k in 1st...

well im going with a 57trim to4e compressor and a p wheel .69 turbine. that should be fun

nissanfanatic
Posts: 1314
Joined: Mon Nov 01, 2004 8:41 pm
Car: 1992 Nissan 240sx SE
Contact:

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That was my exact time and trap speed my first time out on 5psi.

USsil80
Posts: 1949
Joined: Sun Sep 07, 2003 6:21 pm

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turbo2nr wrote:i wanted to be over safe so i went 4 degrees just to make sure.

as for my fuel system i have msd 52lb, top feed rail/ -8an fuel lines, aeromotive fpr, warbrow 255 intank.. i have more then enough fuel . my problem is that i over engineered my car for such little boost

on a side note i know why i pulled such a ****ty time my turbo is on its way out shaft play and its scraping my compressor housing.. that would explain why boost takes so long to come 4k in 1st...

well im going with a 57trim to4e compressor and a p wheel .69 turbine. that should be fun
don't give up.. if it was easier everyone would be running 10's... your fuel sytem is great.. just get the kinks worked out and it will be awsome... to bad about your turbo- but always a good time to upgrade if ya got the money.... plus it seems you are shifting a little low.. good luck with it

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Chezedik
Posts: 4726
Joined: Tue Dec 17, 2002 8:35 pm
Car: 1991 Nissan 240sx

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1) if you are planning on running only 5psi, I would actually advance timing. Faster spool and less wasted money (on premium).

2) Take timing back to stock, then turn boost up, you have to realize that you are using a large and fairly efficient turbo, it will take some time to spool. You can fix this by using emanage to tune the upper left corner with a huge amount of timing retard.

3) boost is taking so long for 3 reasons, you are not launching right, you have timing too retarded, and it is a large turbo. See above.

4) Let the ECU do the shifting, it has much better reaction than you or I.

5) Did I mention that you need to turn up the boost? The T04b (especially in the V-trim) is well out of it's efficiency range at 5psi.

Don't give up, I am on my 3rd overhaul, and I am not done yet. This is only a small setback. You will overcome it.


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