D15B 3 Stage Vtec trouble

[stylez1234]

hi all, ive gotta stock 3stage vtec with gearbox ina eg8 installed over 1yr, worked fine n off lately it has a wierd problem..... It idles normal, starts normal but when you press down it redlines @ about 7200 (which ive read is normal) but on accelerating the rpm cant get passed 6000 in 1st 5500 in 2nd now d wierd part is even if the car jus barely rollin (1-2km/hr) n i mash the clutch n rev of it going jus over 6000 rpm but as soon as i com to a complete stop it redlines @7200rpm.....

Any Ideas as to why this might be happening?????
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[phunky.buddha]

Vacuum leak? Bad injectors?

 

[Korax]

Temp sensor working properly? I know on my b16 if it is cold it will rev to 8 when at a stop. But when in gear and under load, accelerating, it wont go past 5.5 or 6k i think. Its a stock ECU precaution as the vtec system works on oil.

 

[m90polk]

I would do a quick resistance test of the tps make sure its still functioning properly....thats what sends the signal to the ecu for throttle position.