Stille tenning på 99+

Mazdafreaks · Post by **Mazdafreaks** » 08 May 2005, 03:31

Hei eg tenkte eg skulle prøve å få stilt litt mer fortenning på nbÃ¨n min, noen som vet hvordan eg kan fikse dette, vet man kan stille mindre fortenning, dette kan gjøres med en slik skive http://www.flyinmiata.com/index.php?dep ... r=07-91000 men når man vil ha mer hva må gjøres då...

alr · Post by **alr** » 08 May 2005, 10:08

Eneste jeg har hørt om stilling av fortenning på NB er dette fra http://www.miata.net/garage/ignition.html:

Advancing the Timing on a '99 Miata

This was on a US-spec car in Puerto Rico. We have no additional information regarding performance, reliability, or anything else. Miata.net does not recommend this procedure.

"I advance the ignition to 14 degrees on my '99. It's a matter to trick the ECU. How?, Repositioning the Crankshaft Position Sensor more upward. CPS is on the right down side of the Crankshaft Pulley. First, I disconnected the CPS connector, remove the undercover, then remove the CPS bolt. Once a time I got it out of the car I proceed to enlarge the hole (bottom side) of the CPS bolt in order to get the upward reposition. Using my portable Dremer I cut off ("bore") about 2-2.5mm from the integrated washer in the mentioned hole. Finally, I installed back the CPS having condider the following: Air gap between Pulley Plate teeths & CPS (Spec: 0.5-1.5 mm) and tightening torque of CPS bolt is 69.5-95.4 in-lbf. Past Specs were taken from the Miata'99 Workshop Manual.

After complete the installation. I used Timing light to check my new timing and SURPRISE!: timing is now oscillating between 14-16 degrees at idle instead of the factory oscillating 9-11 degrees."

Legg merke til "does not recommend" i fet tekst

(jeg vet ikke selv om det er en dårlig idé eller ikke).

kodvaag · Post by **kodvaag** » 08 May 2005, 12:10

http://www.flyinmiata.com/index.php?dep ... r=07-91000

"It cannot be used to advance the timing." står det jo...

Mazdafreaks · Post by **Mazdafreaks** » 08 May 2005, 13:52

alr wrote:Eneste jeg har hørt om stilling av fortenning på NB er dette fra http://www.miata.net/garage/ignition.html:

Advancing the Timing on a '99 Miata

This was on a US-spec car in Puerto Rico. We have no additional information regarding performance, reliability, or anything else. Miata.net does not recommend this procedure.

"I advance the ignition to 14 degrees on my '99. It's a matter to trick the ECU. How?, Repositioning the Crankshaft Position Sensor more upward. CPS is on the right down side of the Crankshaft Pulley. First, I disconnected the CPS connector, remove the undercover, then remove the CPS bolt. Once a time I got it out of the car I proceed to enlarge the hole (bottom side) of the CPS bolt in order to get the upward reposition. Using my portable Dremer I cut off ("bore") about 2-2.5mm from the integrated washer in the mentioned hole. Finally, I installed back the CPS having condider the following: Air gap between Pulley Plate teeths & CPS (Spec: 0.5-1.5 mm) and tightening torque of CPS bolt is 69.5-95.4 in-lbf. Past Specs were taken from the Miata'99 Workshop Manual.

After complete the installation. I used Timing light to check my new timing and SURPRISE!: timing is now oscillating between 14-16 degrees at idle instead of the factory oscillating 9-11 degrees."
Legg merke til "does not recommend" i fet tekst (jeg vet ikke selv om det er en dårlig idé eller ikke).

Han forklarer det akkurat som eg tenkte var mulig,, må prøve dette då, se om eg får den litt friskere,,