Intake Air Temperatures

ZforMe · 03-31-2010, 11:58 AM

Quote:

Originally Posted by Modshack

Actually I just got my hands on a set this morning (Zpitrates)...... The MAF tubes I cut above had an OD of 2.75" and the Cobb's fit them snugly as they do the stock parts (below). The TB is also 2.75, so 2.75 it is!

Modshack,

Any updates on this project using the Cobb post MAF hoses and your custom made MAF? Will you be retaining the stock air boxes or using cone filters with the insulated tubes?

I'd be interested in your MAF, but not sure I really want to cut my stock boxes. We'll see.

Modshack · 03-31-2010, 12:12 PM

Quote:

Originally Posted by ZforMe

Modshack,

Any updates on this project using the Cobb post MAF hoses and your custom made MAF?

Actually we are doing the install on Sunday. Airboxes are color matched to PG and done, New tube diameter tested on my car. The whole thing should bolt together nicely. We are essentially duplicating my custom CAI system here:
CAI experimental.....> album | Ttschwing | Fotki.com
It will be a little while til we install the Fang vents which are really an integral part of this. So far, the new Tube diameters seem to be working great on my car.. I'm sure John will post his impressions when done....He's still in the break-in phase though!....

Zsteve · 03-31-2010, 01:49 PM

Quote:

Originally Posted by Modshack

Actually we are doing the install on Sunday. Airboxes are color matched to PG and done, New tube diameter tested on my car. The whole thing should bolt together nicely. We are essentially duplicating my custom CAI system here:
CAI experimental.....> album | Ttschwing | Fotki.com
It will be a little while til we install the Fang vents which are really an integral part of this. So far, the new Tube diameters seem to be working great on my car.. I'm sure John will post his impressions when done....He's still in the break-in phase though!....

What is it that the larger MAF tube does for you? Tricks the ECU into dumping more fuel?

Modshack · 03-31-2010, 02:20 PM

Quote:

Originally Posted by Zsteve

What is it that the larger MAF tube does for you? Tricks the ECU into dumping more fuel?

Actually less. The car runs a bit rich to start with..

Zsteve · 03-31-2010, 03:12 PM

Quote:

Originally Posted by Modshack

Actually less. The car runs a bit rich to start with..

even after all the mods? Reading my AFR on the Cobb Im at 14.6 at idle and in the 12s when WOT, isnt that where I should be?

Modshack · 03-31-2010, 03:20 PM

Quote:

Originally Posted by Zsteve

even after all the mods? Reading my AFR on the Cobb Im at 14.6 at idle and in the 12s when WOT, isnt that where I should be?

Yup. We're talking correction factors...Your AFR's are fine. 12.5-12.8 would be ideal for WOT power..

This change is not as radical as the MOFO I build for the VW/Audi's which requires fuel correction.. Theory:
Modshack | Stage 2 MOFO (BAMM)

JvKintheUSA · 04-01-2010, 06:51 PM

Quote:

Originally Posted by KEVTEX

There is not much to look at with the Cobb silicone tubes as they are just round tubes that replace the factory corrugated ones. The fang block off plates were removed to make room for Blinder 27 laser jammer transceivers that I attached to the aluminum bumper. I just left the fang area open to let in more air.

Question: was it easy to get the fangs removed from the front fascia? I'd love to remove mine. Does it require to remove the whole front fascia?

ZforMe · 04-01-2010, 10:45 PM

I just removed my vent covers last night. All i did was drive the car up on ramps, remove the cover underneath the engine (a whole bunch of 10mm screws), then i was able to take a little 10mm wrench and loosen the two screws per side and take them the rest of the way out by hand. So it's possible without removing the bumper. FYI, i have smaller arms and hands, so i was able to manuaver up there pretty easy. Once the two screws are out you still have to kind of snap them out of the grill, scared me a bit, but it was no big deal.

JvKintheUSA · 04-02-2010, 06:24 AM

Cool! I'm going to try to remove the inlets today. Will water that gets sucked up be able to flush out the bumper area? Any chance of water getting into the air filter?

JvKintheUSA · 04-02-2010, 07:18 AM

Just removed the fang covers - it was a breeze. I believe it will help in cooling the engine, but will not add much cooler air to the area where the intakes get their air from. The area between the fang openings and intake area is separated by a rubber flap, presumably to keep water out. I will leave that flap there for now. And I answered my own questions I asked earlier today.

Modshack · 04-02-2010, 10:51 AM

Quote:

Originally Posted by JvKintheUSA

Just removed the fang covers - it was a breeze. I believe it will help in cooling the engine, but will not add much cooler air to the area where the intakes get their air from. The area between the fang openings and intake area is separated by a rubber flap, presumably to keep water out. I will leave that flap there for now. And I answered my own questions I asked earlier today.

Well...this won't help in cooling the engine as it really needs no help and is regulated by the thermostat. These engines run pretty cool (water temp) actually at 180 degrees. Opening the fang vents should provide a little air to the Airbox intakes. There is no "Flap" so I'm not sure what you're talking about there. Water is NOT an issue. If you really want to improve things, connect the fang vents with the Pass through to the airbox for some forced cool air. DIY here: http://www.the370z.com/diy-section-d...ur-airbox.html

JvKintheUSA · 04-02-2010, 03:40 PM

Strange - on my Z the bumper area where the air enters, and the left and right bumper areas where the intake gets the air from, are separated by a relatively heavy rubber flap that looks to be clipped on and could be removed.

Modshack · 04-02-2010, 03:53 PM

Quote:

Originally Posted by JvKintheUSA

Strange - on my Z the bumper area where the air enters, and the left and right bumper areas where the intake gets the air from, are separated by a relatively heavy rubber flap that looks to be clipped on and could be removed.

This piece?......That is to the outside of the airbox inlet....

KEVTEX · 04-02-2010, 05:07 PM

This morning when the car was first started, after sitting all night, the IAT was 5 degrees higher than the ambient reading. I would like to know if others have noticed this same temperature difference upon startup or whether my sensors are out of calibration by 5 degrees. One would expect the temperatures would have stabilized overnight to the point where they read the same.

JvKintheUSA · 04-02-2010, 06:17 PM

No, this one. This is the view from underneath the car looking to the left. The bright spot is the fang opening and the flap can be seen to the left of it (if you click the image you can vaguely see the inscription "ET" on it).

Modshack-I believe you can see them on your last picture. On the right side of the windshield washer reservoir. From looking at your picture with the front fascia removed, it look like that the intake openings are closer to the center of the car then where those flaps are located, so I guess they do not hurt the airflow to the intakes.

04-01-2010, 10:45 PM	#38 (permalink)
ZforMe Base Member Join Date: Jan 2009 Location: Memphis TN Posts: 238 Drives: 370Z Sport Auto PG Rep Power: 16	I just removed my vent covers last night. All i did was drive the car up on ramps, remove the cover underneath the engine (a whole bunch of 10mm screws), then i was able to take a little 10mm wrench and loosen the two screws per side and take them the rest of the way out by hand. So it's possible without removing the bumper. FYI, i have smaller arms and hands, so i was able to manuaver up there pretty easy. Once the two screws are out you still have to kind of snap them out of the grill, scared me a bit, but it was no big deal. __________________ 13.369 @ 102.73 Bone Stock. BERK HFC's installed 5/14/09 @ 1490miles, 13.212 @ 106.15. Cobb Post MAF Hoses installed 3/20/10 @ 5,043miles, future: FI exhaust with 18" res and s/s cans.

04-02-2010, 06:24 AM	#39 (permalink)
JvKintheUSA Enthusiast Member Join Date: Jun 2009 Location: Canton, GA Posts: 465 Drives: 2013 Shelby GT500 Rep Power: 427	Cool! I'm going to try to remove the inlets today. Will water that gets sucked up be able to flush out the bumper area? Any chance of water getting into the air filter? __________________

04-02-2010, 07:18 AM	#40 (permalink)
JvKintheUSA Enthusiast Member Join Date: Jun 2009 Location: Canton, GA Posts: 465 Drives: 2013 Shelby GT500 Rep Power: 427	Just removed the fang covers - it was a breeze. I believe it will help in cooling the engine, but will not add much cooler air to the area where the intakes get their air from. The area between the fang openings and intake area is separated by a rubber flap, presumably to keep water out. I will leave that flap there for now. And I answered my own questions I asked earlier today. __________________

04-02-2010, 03:40 PM	#42 (permalink)
JvKintheUSA Enthusiast Member Join Date: Jun 2009 Location: Canton, GA Posts: 465 Drives: 2013 Shelby GT500 Rep Power: 427	Strange - on my Z the bumper area where the air enters, and the left and right bumper areas where the intake gets the air from, are separated by a relatively heavy rubber flap that looks to be clipped on and could be removed. __________________

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04-02-2010, 05:07 PM	#44 (permalink)
KEVTEX Base Member Join Date: Nov 2009 Location: Montgomery, TX Posts: 119 Drives: 2010 370Z 7at sp pg Rep Power: 15	This morning when the car was first started, after sitting all night, the IAT was 5 degrees higher than the ambient reading. I would like to know if others have noticed this same temperature difference upon startup or whether my sensors are out of calibration by 5 degrees. One would expect the temperatures would have stabilized overnight to the point where they read the same.