That cover is just a heat trap, so off it went.

 

According to my datalogging, it does not trap any measureable heat.

 

But wouldn't it measure that temp at the IAT which is built into the maf?

 

I has my plenum chromed and switched to a 350Z engine cover to show off the chrome!!!

 

It does trap a lot of heat and this has been proven many times. It is obvious it traps heat. Use a damn infared temp gauge and measure the manifold temp before the cover removed and after on the same type of temps and driving conditions. It is almost a 40 degree difference.

YOU sir need to quit spewing wrong information.


PS, if it didn't trap heat, then how come the 350Z only covers the front part of the engne for performance instead of sound insulation?

 

My cover is currently on but I want to do the half carbon fiber cover with the polished plenum

 

I've run my G at the track multiple times and have made about 30 passes. There is NO difference in ET and MPH with a scalding hot intake manifold or a cold one. If anything, the car is quicker on the 2nd or 3rd hot lap. BossSho and other avid racers have reported the same exact thing.



1) Ummm...it's a sportscar therefore people most likely want to hear the engine.

2) Most luxury-focused cars are trending to plastic clad engine bays

3) And the most obvious, there would be a clearance issue with the strut tower bar and also the hood.

 

For those of you doing this mod for performance, consider this, the intake temps are measured at the MAF and from there the air fuel ratio and timing tables are calculated. Also, the air moving through the intake manifold is going 10 to 40mph in a span of about 25". Just how much additional heat do you think the air will take on going through such a short run at a high rate of speed. The truth is, if Nissan thought that the intake air was going to be impacts dramatically by the manifold, then they'd collecting the intake temp information in the manifold.

Finally, if by some marvel of engineering, you were able to cool the air 10+ degree from the MAF to the manifold, the car wouldn't run correctly because the ECU would think the ingested air was 10 degrees hotter therefore the A/F ratio and timing wouldn't be correct and the car would be.........SLOWER.

 

Running at the track shows nothing in this type of area. You need to actually be daily driving, sitting at idle for long periods of time to actually allow the temp to go up with not much airflow.

So again your false logic prevails as usual.

 

Okay, Chief

 

I vote for the 350Z cover.

 

The cooler the air the more molecules u can fit in... The cover is a blanket on top of the motor...

 

recently threw it on still debating on which plenum/spacer to buy.

 

Another vote for 1/2 cover... modified of course...

 

mine is on. I love the way it looks. makes the engine compartment looks clean and tidy