Upgrading Radiators

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May 11, 2007 | 04:58 PM

#21

Hydrazine

MOTORDYNE-MY350Z SPONSOR

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From: L.A. California

Quote:

Originally Posted by Q45tech

The ecu has a equation to decrease ignition advance when coolant increases beyond ideal [174-195F] usually 1 degree per 5F limited to 5 degrees retard at 220F.

Part of summer overheat protection.

Where did you get that info? Service manual?

May 11, 2007 | 05:04 PM

#22

Wired 24/7

Dr. Wired

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From: San Mateo, CA

Quote:

Originally Posted by Hydrazine

Where did you get that info? Service manual?

I think you can test it with cipher. Cipher has a function to trick the ECU into thinking the coolant is at X temperature.

Edit:

source: http://www.uprev.com/text/updates.html

Last edited by Wired 24/7; May 11, 2007 at 05:09 PM.

May 11, 2007 | 05:06 PM

#23

Dave 90TT

350Z 2+2

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From: Omaha, NE

Quote:

Originally Posted by RudeG_v2.0

There is a direct bolt on aftermarket radiator for the G.

SGP got Power to make one for them. Here's the link from G35driver.com.

http://g35driver.com/forums/showthread.php?t=128757

I hope this helps.

It does, but the fitment on that one is not perfect, according to the thread. I'll have to look into it a bit more. Thanks for the link!

Dave

May 11, 2007 | 06:13 PM

#24

Sharif@Forged

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From: Marietta, GA

Quote:

Originally Posted by Q45tech

The ecu has a equation to decrease ignition advance when coolant increases beyond ideal [174-195F] usually 1 degree per 5F limited to 5 degrees retard at 220F.

Part of summer overheat protection.

If this is correct, then its a good thing that Eaglegreen and many of our customers are running the FCON....as the stock ECU has zero control over ignition timing and fuel.

But honestly, during cold start, and cold operation, the ECU advances timing, so wouldnt it make sense, that the ECU would actually advance the timing when coolant temps are below optimal?