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Discussion Starter · #1 ·
STOCK GS-R ECU At what RPMs is the VTEC activiated?

Hi, I would like to know the specs of a STOCK (non Chiped) ECU for the 95 Integra GS-R DOHC VTEC (P72 ECU)USDM.

At what RPMs is the VTEC activiated? 4,400rpm?? 5,500rpm ??? :confused: :confused:

Thanks for your help
 

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VTEC is activated at 4400 RPM, the intake manifold's secondary intake runners open at 5700 RPM.
 

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Discussion Starter · #4 ·
ok, i got a b16A , and i have the p28 Chiped, and my vtec activate at 5,000rpm, just 1 time, and today i brought a P72 ECU , i want to know if my B16A engine second gen have the secundary and if it going to activate at 4,400 and then 5,600rpm. 2 times???
 

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shocky said:
ok, i got a b16A , and i have the p28 Chiped, and my vtec activate at 5,000rpm, just 1 time, and today i brought a P72 ECU , i want to know if my B16A engine second gen have the secundary and if it going to activate at 4,400 and then 5,600rpm. 2 times???


read your other THREAD.

MrSwirly said:
VTEC is activated at 4400 RPM, the intake manifold's secondary intake runners open at 5700 RPM.
Correcto:)
 

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Discussion Starter · #6 ·
Hey thanks!!

Gracias!! :D
 

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Discussion Starter · #7 ·
I DONT KNOW WHY , MY ECU (P72) ACTIVATE VTEC AT 4,800 WHEN I DRIVE NORMALY, BUT WHEN I PUT THE PEDAL GAS TO THE FLOOR, THE VTEC ACTIVATE AT 4,400 ONLY IN FIRST GEAR, I DONT KNOW WHY!! :confused:
 

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because it is dependent upon how open the throttle is. the earliest it will activate is 4.4k...the latest is around 4.7-4.8k. i have noticed this in my gsr, too. at wide open throttle it will kick in sooner. and it will always kick in unlike the secondaries...they only come on when you are at full throttle. and this is for all gears.
 

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Discussion Starter · #10 ·
MrSwirly said:
VTEC is activated at 4400 RPM, the intake manifold's secondary intake runners open at 5700 RPM.
Does the TYPE R Intake Manifold Has the SECONDARY function??:confused:
 

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Discussion Starter · #12 ·
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