Cooling the intake
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Joined: Jul 2004
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From: Arlington Tx.
Cooling the intake
In real numbers what gain would I see using heatwrap on an unmodified intake.
The conditions are:
101 F ambient
67% humidity
Stop and go driving under 40 mph.
These are todays conditions in DFW. The power loss is very noticeable to say the least. I know there is not alot I can do about it but even if the gain is marginal(felt) I would do the mod.
Thanks for your input.
The conditions are:
101 F ambient
67% humidity
Stop and go driving under 40 mph.
These are todays conditions in DFW. The power loss is very noticeable to say the least. I know there is not alot I can do about it but even if the gain is marginal(felt) I would do the mod.
Thanks for your input.
Registered User
Joined: Dec 2003
Posts: 2,514
Likes: 5
From: Marietta, Georgia
Re: Cooling the intake
Measure the [delta] temperature between inlet and just in front of MAF or use a OBD2 scanner to read the in MAF temp sensor.
Obviously low air flow speed [in pipes filter box] is the worst case [at idle] by the time you are moving 40 mph conductive heating is insignificant ~~1%.
Love Field is 487' DFW is 600' [with your supplied temp/humidity and a guess at dew point] power is down by 10% due to outside conditions.
Now each 10 degree rise from 101F to the MAF willl decrease power by another 1% [0.95%].
What we don't know is at what ambient air temp [as read by MAF temp sensor] or at what coolant temp sensor reading the ecu goes into extra protective programming due to Summer heat.
On earlier Nissans any coolant above 195F started the process [but the G runs 6F hotter naturally] so let's guess 200F and above on the G35.
My guess is that the power might be down 15%.
Will the reflective wrap help? I doubt it on an oem stock air intake system. So much we don't know without more temp data.
Obviously low air flow speed [in pipes filter box] is the worst case [at idle] by the time you are moving 40 mph conductive heating is insignificant ~~1%.
Love Field is 487' DFW is 600' [with your supplied temp/humidity and a guess at dew point] power is down by 10% due to outside conditions.
Now each 10 degree rise from 101F to the MAF willl decrease power by another 1% [0.95%].
What we don't know is at what ambient air temp [as read by MAF temp sensor] or at what coolant temp sensor reading the ecu goes into extra protective programming due to Summer heat.
On earlier Nissans any coolant above 195F started the process [but the G runs 6F hotter naturally] so let's guess 200F and above on the G35.
My guess is that the power might be down 15%.
Will the reflective wrap help? I doubt it on an oem stock air intake system. So much we don't know without more temp data.
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