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floyd447 · 07-16-2008, 06:04 PM

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 · 07-16-2008, 06:36 PM

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

efhondakid · 07-16-2008, 06:38 PM

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

floyd447 · 07-16-2008, 08:46 PM

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 · 07-16-2008, 09:02 PM

Quote:

Originally Posted by 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.

maybe try a new solenoid??or a differant ecu

Luis998 · 07-17-2008, 02:05 AM

What ECU are you running?

Individua · 07-17-2008, 11:12 AM

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 · 07-17-2008, 11:43 AM

revlimiter is set to 8200 stock

Justin66 · 07-17-2008, 03:59 PM

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

floyd447 · 07-17-2008, 10:28 PM

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 · 07-17-2008, 10:38 PM

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

carlo · 07-24-2008, 04:02 PM

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

07-16-2008, 06:04 PM	#1
floyd447 Junior Member Join Date: Nov 2006 Posts: 4 iTrader: 0 / 0% Rep Power: 0	vtec engages late 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?

07-16-2008, 06:36 PM	#2
INJEN78 ¿UnKnOwN? Join Date: Oct 2007 Location: CT(860) VT(802) Age: 20 Posts: 4,679 iTrader: 3 / 100% Ride: 91 CRX si Rep Power: 98	sounds to me like a problem with the ecu...is it chipped??? __________________ http://hondaswap.com/auto-multi-medi...st1144603.html <my CRX R.I.P BEN LEE2/24/08 we love and miss you R.I.P Rex 8/18/08 coolest dog ever!!! GOOD FAST CHEAP, you can pick only two. fast and cheap isn't good good and cheap isn't fast good and fast isn't cheap

07-16-2008, 06:38 PM	#3
efhondakid My name is Byron. Join Date: Mar 2007 Location: Akron-Canton, Ohio Age: 19 Posts: 3,382 iTrader: 0 / 0% Ride: `89 DX Hatch w/JDM B16 Rep Power: 107	Have you checked your oil? And how do you know its engaging late? __________________ Dont PM me with tech questions. I will not answer them. Looking for a P28 and B-series turbo parts, PM me.

07-17-2008, 11:12 AM	#7
Individua Junior Member Join Date: Jun 2008 Location: Waldorf Germany Posts: 22 iTrader: 0 / 0% Ride: 1990 B16a Civic SI Rep Power: 0	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

07-17-2008, 11:43 AM	#8
INJEN78 ¿UnKnOwN? Join Date: Oct 2007 Location: CT(860) VT(802) Age: 20 Posts: 4,679 iTrader: 3 / 100% Ride: 91 CRX si Rep Power: 98	revlimiter is set to 8200 stock __________________ http://hondaswap.com/auto-multi-medi...st1144603.html <my CRX R.I.P BEN LEE2/24/08 we love and miss you R.I.P Rex 8/18/08 coolest dog ever!!! GOOD FAST CHEAP, you can pick only two. fast and cheap isn't good good and cheap isn't fast good and fast isn't cheap


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07-16-2008, 08:46 PM	#4
floyd447 Junior Member Join Date: Nov 2006 Posts: 4 iTrader: 0 / 0% Rep Power: 0	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.

07-17-2008, 03:59 PM	#9
Justin66 The Hondaswap Canadian Join Date: Dec 2007 Location: Peterborough, Ontario Age: 22 Posts: 996 iTrader: 0 / 0% Ride: 1990 Intergra GS/XSi Rep Power: 27	Mine limits at close to 8500. Check your VTEC filter and gasket, worth a try. __________________ 90 Integra GS/ XSi - JDM B16A SiR2 w/ full exhaust & short ram - J1 Tranny - Skunk2 stage 1 cams & gears (not installed yet) - H & R lowering springs - Rear strut bar and front camber kit - HKS Hi-Power exhaust - Powersteering removed - JDM 1-piece headlights & sidemarkers - Optima RedT relocated to rear XBOX LIVE: JustinE66

07-17-2008, 10:28 PM	#10
floyd447 Junior Member Join Date: Nov 2006 Posts: 4 iTrader: 0 / 0% Rep Power: 0	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.

07-17-2008, 10:38 PM	#11
floyd447 Junior Member Join Date: Nov 2006 Posts: 4 iTrader: 0 / 0% Rep Power: 0	Could it possibly have anything to do with my car having an obd1 distrubitor?

07-24-2008, 04:02 PM	#12
carlo jdm spec Join Date: Jul 2008 Age: 23 Posts: 8 iTrader: 0 / 0% Ride: da9 Rep Power: 0	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

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vtec engages late