vtec engages late

[floyd447]

I have a 90 si hatchback with a b16a1 in it. The car runs strong, but vtec doesn't come on until about 6500 rpm. Is this a computer issue, or does any one have any suggestions for me to try?

 

[INJEN78]

sounds to me like a problem with the ecu...is it chipped???

 

[efhondakid]

Have you checked your oil? And how do you know its engaging late?

 

[floyd447]

I don't think that it is chipped, because I don't see any benefit to raising the vtec change over and the rev limiter is only at 8200. It has always changed over late even right after oil changes and I check the oil often, so I don't think that oil level is the cause.

 

[INJEN78]

I don't think that it is chipped, because I don't see any benefit to raising the vtec change over and the rev limiter is only at 8200. It has always changed over late even right after oil changes and I check the oil often, so I don't think that oil level is the cause.

maybe try a new solenoid??or a differant ecu

 

[Luis998]

What ECU are you running?

 

[Individua]

quick ?

Quick question? Sorry dont meen to get off topic but why is your rev limiter at 82?
My redline begins at 8 and it wont really even bounce off the needle? Im new to the whole honda thing

 

[INJEN78]

revlimiter is set to 8200 stock

 

[Justin66]

Mine limits at close to 8500. Check your VTEC filter and gasket, worth a try.

 

[floyd447]

It's the pr3 ecu and I'm not sure if the rev limit is exactly at 8200 its just around there, and I have heard many places that that is where the stock limit should be. But one of my old cars had a pr3 ecu in it that i could run the needle all the way down to the end of the tach which I would assume is about 8600 or so and that ecu was stock to the best of my knowledge.

 

[floyd447]

Could it possibly have anything to do with my car having an obd1 distrubitor?

 

[carlo]

have you try a difrent one i dont think the distrubitor is gona afect the vtec check your conections in the selenoide and oil pressure