V70 M4.4 running COP (Coil On Plug) - Page 2

DunkinBiskits · Nov 22nd, 2017, 18:08

currently running this kit on my 850 T-5R and its a credit to 'Avinitlarge' and all involved. Knock is pretty much a thing of the past as a result, let alone far better dwell times.

worth it. all day every day.

Dunc

Cypher007 · Nov 23rd, 2017, 19:34

hmm, interesting.

do you notice any improvement in fuel economy?

I run water to try and avoid knock.

I think mine has a 4.3 ecu.

DunkinBiskits · Nov 23rd, 2017, 21:23

Quote:

Originally Posted by Cypher007

do you notice any improvement in fuel economy?

cant say ive ever checked, but its not really an important factor in my eyes being its my weekend/play car.

Doubt itll have any gains in that area, just makes each bang a more complete burn ergo more power out of the same cc of injected fuel.

Cypher007 · Nov 24th, 2017, 17:06

not sure you can have a more complete burn. you might if the ecu was mapped be able to advance the timing thus getting more power from the fuel before knock occurs.

I'm not sure what the advance limit is on a stock map, I would guess there is one in case of a knock sensor failing.

DunkinBiskits · Nov 24th, 2017, 17:52

you will get a better burn as the spark is stronger, and also because the coil is far far closer to the plug itself. Thats why you get stronger pull and more stable idle. you also remove the latency thats built in to the rotor arm/cap setup, which is about 0.5° of advance. This is the main reason for knock/pre det under high load on the single coil setup twinned with the lack of dwell time.

thankfully mine is far from stock so im not bound by OE limitations

Nov 22nd, 2017, 18:08	#11
DunkinBiskits Master Member Last Online: Jan 1st, 2024 13:30 Join Date: Nov 2016 Location: Merseyside	currently running this kit on my 850 T-5R and its a credit to 'Avinitlarge' and all involved. Knock is pretty much a thing of the past as a result, let alone far better dwell times. worth it. all day every day. Dunc __________________ https://www.facebook.com/VolvoComposites/ Horsepower is how fast you hit the wall Torque is how far you take the wall with you

Nov 23rd, 2017, 19:34	#12
Cypher007 Master Member Last Online: Jan 8th, 2024 14:20 Join Date: Dec 2001 Location: Lincolnshire	hmm, interesting. do you notice any improvement in fuel economy? I run water to try and avoid knock. I think mine has a 4.3 ecu. __________________ Volvo 854 T5R Yellow 1994 Aquamist 2D (Don & Aquamist) BMC panel filter (Don) Ferrita Cat Back (Don) Denso Iridium Spark Plugs (Hong Kong) PowerFlex Top Engine Mount (?) PowerFlex Wishbone Bushes (Elk Parts) 302mm front brake upgrade Goodridge front hoses (rears to be fitted later) 600W Inverter (ebay) History: 1991 Volvo 340DL (1982) 1994 Volvo 360GLE (1989) 1999 Volvo 360GLT (1988) 2002 Volvo 850GLT (1991) 2004 Volvo 850T5R (1994)

Nov 24th, 2017, 17:06	#14
Cypher007 Master Member Last Online: Jan 8th, 2024 14:20 Join Date: Dec 2001 Location: Lincolnshire	not sure you can have a more complete burn. you might if the ecu was mapped be able to advance the timing thus getting more power from the fuel before knock occurs. I'm not sure what the advance limit is on a stock map, I would guess there is one in case of a knock sensor failing. __________________ Volvo 854 T5R Yellow 1994 Aquamist 2D (Don & Aquamist) BMC panel filter (Don) Ferrita Cat Back (Don) Denso Iridium Spark Plugs (Hong Kong) PowerFlex Top Engine Mount (?) PowerFlex Wishbone Bushes (Elk Parts) 302mm front brake upgrade Goodridge front hoses (rears to be fitted later) 600W Inverter (ebay) History: 1991 Volvo 340DL (1982) 1994 Volvo 360GLE (1989) 1999 Volvo 360GLT (1988) 2002 Volvo 850GLT (1991) 2004 Volvo 850T5R (1994)

Nov 24th, 2017, 17:52	#15
DunkinBiskits Master Member Last Online: Jan 1st, 2024 13:30 Join Date: Nov 2016 Location: Merseyside	you will get a better burn as the spark is stronger, and also because the coil is far far closer to the plug itself. Thats why you get stronger pull and more stable idle. you also remove the latency thats built in to the rotor arm/cap setup, which is about 0.5° of advance. This is the main reason for knock/pre det under high load on the single coil setup twinned with the lack of dwell time. thankfully mine is far from stock so im not bound by OE limitations __________________ https://www.facebook.com/VolvoComposites/ Horsepower is how fast you hit the wall Torque is how far you take the wall with you Last edited by DunkinBiskits; Nov 24th, 2017 at 17:57.

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