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My 2.5 Upgrade

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Old 04 May 2004, 11:18 PM
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peccy
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Default My 2.5 Upgrade

currently having the STi 2.5 short motor dropped into my STi6 Type R, i understand i may need some other bits too? if so, any recommendations on Turbos, Injectors, FMIC, ECUs etc. etc.

current mods include Up and Down pipes and a TEK3 (to be remapped again for the 2.5)

not after BIG power, maybe something in the low 12's though

cheers, peccy
Old 04 May 2004, 11:30 PM
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john banks
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20G, 740s/pump/reg, induction, exhaust, FMIC, headers, remap, higher capacity MAF sensor or housing, 3 port solenoid, knocklink, AFR meter, oil pres/temp, boost gauge.

Should do 400 BHP and 400 lbft on Optimax without additives on most rollers, and probably about 12.0 1/4 with a 5 speed. You'll need about 1.4 bar midrange, and about 1.1 bar at the top end for this.
Old 05 May 2004, 01:53 PM
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Bob_Baker
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As above plus a decent transmission to cope.
Old 05 May 2004, 02:03 PM
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P20SPD
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dont know your insurance history, etc Dave, but a serious piece of advice would be check you can get insurance for the 2.5.

steven
Old 05 May 2004, 02:05 PM
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peccy
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what would happen if i just leave my current ancillaries (stock sti6, vf28...) as they are?
Old 05 May 2004, 02:08 PM
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peccy
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Originally Posted by P20SPD
dont know your insurance history, etc Dave, but a serious piece of advice would be check you can get insurance for the 2.5.

steven
already sorted
Old 05 May 2004, 02:19 PM
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what would happen if i just leave my current ancillaries (stock sti6, vf28...) as they are?
Turbo would lose puff quite early, due to the increased airflow through the engine.

Injectors Duty Cycle will be maxed out.

Induction needed for the FMIC.

Keeping TMIC and your charge temps will get silly.

3 Port Solenoid for better boost control when mapping.

Gauges for early warning devices.
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