Vortech or Comptech
Joined: Mar 2001
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Originally Posted by elusiv,Sep 6 2006, 10:23 PM
I recently dyno'd the car and found that below vtec i was fluctuating between 11.00-12.00. In vtec the AFR hits high 11's and low 12's.
However I found out that when you're just cruising around your AFR's are pig rich since you turned up teh fuel pressure...
"Just cruising around" is part throttle and would not induce much boost below VTEC. This is not a good comparison. One does not necessarily relate to the other.
My car will fluctuate around 14.7 when "just cruising around", but anytime I go WOT, even below VTEC, the a/f instantly jumps to near 12. When you open up the throttle plate, you allow boost in. This is when the FMU will react. Too bad you don't have an A/F gauge in your car. You'd see this.
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From: Calgary
Originally Posted by xviper,Sep 7 2006, 12:10 AM
OK, let's just backtrack a bit here. Quoting what ek9 said:
You can't compare a/f of a car when it's "just driving around" to what you did on a dyno. On the dyno, you're WOT throttle from the word GO! WOT throttle, even below VTEC is still boosting. The fuel pressure WILL ramp up.
"Just cruising around" is part throttle and would not induce much boost below VTEC. This is not a good comparison. One does not necessarily relate to the other.
My car will fluctuate around 14.7 when "just cruising around", but anytime I go WOT, even below VTEC, the a/f instantly jumps to near 12. When you open up the throttle plate, you allow boost in. This is when the FMU will react. Too bad you don't have an A/F gauge in your car. You'd see this.
You can't compare a/f of a car when it's "just driving around" to what you did on a dyno. On the dyno, you're WOT throttle from the word GO! WOT throttle, even below VTEC is still boosting. The fuel pressure WILL ramp up.
"Just cruising around" is part throttle and would not induce much boost below VTEC. This is not a good comparison. One does not necessarily relate to the other.
My car will fluctuate around 14.7 when "just cruising around", but anytime I go WOT, even below VTEC, the a/f instantly jumps to near 12. When you open up the throttle plate, you allow boost in. This is when the FMU will react. Too bad you don't have an A/F gauge in your car. You'd see this.
Thanks for the clarification though!
Joined: Nov 2003
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From: Heart of England
Guys any one got a phone number for Vortech & Comptech.
I want to SC a 04/05 UK car problem.
I need to work out the implications of the fact the ALL UK cars are still 2.0 and not 2.2 after 04. The map changes after 04 giving a smoother vtec transition.
Would a pre 04 kit from Vortech or Comptech work with out a seperate ECU and mapping
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From: Dry Branch
Originally Posted by elusiv,Sep 6 2006, 11:23 PM
The information ek9 got was from me.
I recently dyno'd the car and found that below vtec i was fluctuating between 11.00-12.00. In vtec the AFR hits high 11's and low 12's.
It's hard to say since I didnt do a before and after dyno, but im assuming if i crank up the fuel pressure, it would probably get richer everywhere.
This was my own interpretation, albeit probably a very uneducated one.
I recently dyno'd the car and found that below vtec i was fluctuating between 11.00-12.00. In vtec the AFR hits high 11's and low 12's.
It's hard to say since I didnt do a before and after dyno, but im assuming if i crank up the fuel pressure, it would probably get richer everywhere.
This was my own interpretation, albeit probably a very uneducated one.
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Joined: Feb 2004
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From: Dry Branch
Originally Posted by mikey k,Sep 7 2006, 12:50 PM
Guys any one got a phone number for Vortech & Comptech.
I want to SC a 04/05 UK car problem.
I need to work out the implications of the fact the ALL UK cars are still 2.0 and not 2.2 after 04. The map changes after 04 giving a smoother vtec transition.
Would a pre 04 kit from Vortech or Comptech work with out a seperate ECU and mapping
Is there any reason (other than cost) that you couldn't simply drop in an ECU from an MY02-03 US spec car?
Joined: Nov 2003
Posts: 25,566
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From: Heart of England
Originally Posted by RED MX5,Sep 7 2006, 08:03 PM
I have used the phone number on their Web site ((916) 939-9118) to contact Comptech USA, but I don't know if that will be of any help there in the UK.
Is there any reason (other than cost) that you couldn't simply drop in an ECU from an MY02-03 US spec car?
Is there any reason (other than cost) that you couldn't simply drop in an ECU from an MY02-03 US spec car?
google eventually delivered on contact detailsNot a bad idea on the ECU!
I've just been offered a GPW JDM 2000 car with out an engine!
