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> loosing urge, 7afte
post Feb 25, 2008 - 3:19 AM
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normality78

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guy's,
im having some problem here. Hope u guys can help.

just a brief thru my spec. ori 7afe engine, bolt on turbo. IHI VF10, 2.5" downpipe. 2.5" piping till 2" inlet straight flow exhaust. Control by emanage. Auto gearbox. Boost 0.9bar

from standstill, (gear select manually) from 1st gear -2nd gear, my car does pull hard. Can see the speed climb fast. But once in 3rd gear, the car dun pull hard anymore. The speed wasnt climb that fast also. But boost still maitain though.

on cruising (120-130kmh), D gear selection, if i tekan, the boost reach 0.9bar with ease but the car speed wasnt climb that fast.

What can be wrong? If Gb slip, i would have problem with 1st-2nd gear already. Dynoed 155whp @ 5800rpm and 200nm wtq @ 4500rpm. My suspect could be having low torque.

But the catch is here. It only happen after i dyno tune my car. last time whn i havent tune my car, i dun have this problem. I was told be4 tune im running very lean.

Any input?
post Feb 25, 2008 - 10:45 AM
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6strngs



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if you were running lean before, and your tuner has richened it up, it's very possible that you lost some horsepower, but running very lean on a boosted car is a very quick way to blow the motor! I'd say get a better fuel pump, some bigger injectors (look around and see what size other people on this wesite run) and then re-tune it. you definately don't want to be starving your motor of fuel.


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94 GT - Sold -------- 69 Pontiac Lemans - Sold
88 Alltrac - Sold ---- 04 WRX - Sold
00 GT-S - Sold ------ 91 Miata - project/drift car
95 GT - Sold -------- 96 GT - New Daily Drive
post Feb 26, 2008 - 3:36 AM
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normality78

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im already running on 330cc injector with Slyvia S15 turbo fuel pump. and from the dyno result, the AFR seems ok.

i've compare with some dyno sample i manage to obtain but the torque seems ok, except im really low on hp
post Feb 26, 2008 - 8:49 AM
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Hanyo

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selecting the gear manual?
post Feb 26, 2008 - 12:17 PM
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jason



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like D 2 1 he leaves it in 1 to tune it so it doesnt shift on him, then pops it into 2 when he wants to shift, then D for 3rd & 4th gear

it still seems slower when you try and shift it, but helps when taking turns - autoX or just flying around town, keep it in gear and the revs up


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you know why they put sheep at the edge of a cliff.... that way they push back!
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(2:27:32 AM) edit: please f*cking work, f*ck, sh*t, piss
(2:28:08 AM) edit: that did the trick
post Feb 26, 2008 - 1:13 PM
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lagos



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Post up your dyno sheet.


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15PSI - 30MPG - Megasquirt Tuned

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