Intake Air Temperatures

Zsteve · 02-26-2010, 11:50 AM

Steve do you need to tune after installing the new MAF? I had put one put on my TT after it was tuned and I guess cause it was a bigger MAF it caused back firing and just didnt do good.

Modshack · 02-26-2010, 12:39 PM

Quote:

Originally Posted by Zsteve

Steve do you need to tune after installing the new MAF? I had put one put on my TT after it was tuned and I guess cause it was a bigger MAF it caused back firing and just didnt do good.

No...these are cut to work within the ECU self adjusting parameters which has proven pretty flexible.. Not radical at all..

The reason you needed a new MAF on your TT was because the old one was failing. All of a sudden you were asking for 40 more HP and the tired MAF couldn't supply enough of a signal to keep the fueling correct. They are particularly fragile on VW/Audi cars. On those I actually go up 12-15% in size, but up the fuel pressure to account for the lower MAF signal. Read the link in the quote above..

ZforMe · 02-27-2010, 12:44 PM

Anyone know the ID of the Cobb silicon tubes? Is it bigger than the corrugated? I saw that Modshack used custom 2.75" which is bigger than the 2.5' stockers, but I haven't seen any dimensions of the Cobb tubes.

Modshack · 02-27-2010, 01:18 PM

Quote:

Originally Posted by ZforMe

Anyone know the ID of the Cobb silicon tubes? Is it bigger than the corrugated? I saw that Modshack used custom 2.75" which is bigger than the 2.5' stockers, but I haven't seen any dimensions of the Cobb tubes.

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!

ZforMe · 02-28-2010, 01:04 PM

Awesome, Thanks!

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.

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.

Modshack · 04-02-2010, 06:17 PM

Quote:

Originally Posted by KEVTEX

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.

They do not match exactly...

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.

Modshack · 04-02-2010, 06:31 PM

Quote:

Originally Posted by JvKintheUSA

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).

Still not understanding what you mean here...That's just the side of the bumper molding...
Here's a shot with the bumper off and one of my hose flanges mounted over the fang opening..

ZPirate · 04-04-2010, 12:26 PM

Steve and I installed my Modshack custom intakes today. Steve was able to powdercoat the intake cans to match PG. They turned out great! Steve was also able to machine the MAF tubes out of aluminum. Those turned out nice too. And the Cobb intake tubes look much cleaner than stock. They fit perfectly as well.

I still need to install my painted engine covers to match the Modshack custom intakes. I'll try to install them, take some pictures and post them up later.

Aluminum MAF Holder with OEM MAF installed

Intake Installation

Driver's side

Passenger side

Full intake without strut bar reinstalled

With strut bar reinstalled

Zsteve · 04-04-2010, 12:33 PM

can you feel any gains? Modshack if your MAF is to lean out the car, would I see any gains from it since I have the Cobb tune? Also would the cobb tube and your MAF fit with stock boxes?

ZPirate · 04-04-2010, 12:42 PM

Quote:

Originally Posted by Zsteve

can you feel any gains? Modshack if your MAF is to lean out the car, would I see any gains from it since I have the Cobb tune? Also would the cobb tube and your MAF fit with stock boxes?

I haven't really had a chance to go out and drive the car yet. I basically just drove home from Modshacks. The car runs great though with the intakes and they make a nice sound when you get on it.

BTW the Cobb tubes will fit on the car with the OEM MAF and intake boxes. They basically replace the OEM hoses between the MAF and the throttle body.

02-26-2010, 11:50 AM	#1 (permalink)
Zsteve A True Z Fanatic Join Date: Sep 2009 Location: TX Posts: 3,298 Drives: the 2 balled club Rep Power: 22	Steve do you need to tune after installing the new MAF? I had put one put on my TT after it was tuned and I guess cause it was a bigger MAF it caused back firing and just didnt do good. __________________ 2010 LS3 C6 Silver coupe corvette

02-27-2010, 12:44 PM	#3 (permalink)
ZforMe Base Member Join Date: Jan 2009 Location: Memphis TN Posts: 238 Drives: 370Z Sport Auto PG Rep Power: 17	Anyone know the ID of the Cobb silicon tubes? Is it bigger than the corrugated? I saw that Modshack used custom 2.75" which is bigger than the 2.5' stockers, but I haven't seen any dimensions of the Cobb tubes. __________________ 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.

02-28-2010, 01:04 PM	#5 (permalink)
ZforMe Base Member Join Date: Jan 2009 Location: Memphis TN Posts: 238 Drives: 370Z Sport Auto PG Rep Power: 17	Awesome, Thanks! __________________ 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, 03:40 PM	#7 (permalink)
JvKintheUSA Enthusiast Member Join Date: Jun 2009 Location: Canton, GA Posts: 465 Drives: 2013 Shelby GT500 Rep Power: 428	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. __________________

04-04-2010, 12:26 PM	#13 (permalink)
ZPirate Track Member Join Date: Dec 2008 Location: Greenville, NC Posts: 792 Drives: 09' 370Z & 03' 350Z Rep Power: 18	Steve and I installed my Modshack custom intakes today. Steve was able to powdercoat the intake cans to match PG. They turned out great! Steve was also able to machine the MAF tubes out of aluminum. Those turned out nice too. And the Cobb intake tubes look much cleaner than stock. They fit perfectly as well. I still need to install my painted engine covers to match the Modshack custom intakes. I'll try to install them, take some pictures and post them up later. Aluminum MAF Holder with OEM MAF installed Intake Installation Driver's side Passenger side Full intake without strut bar reinstalled With strut bar reinstalled __________________ 2003 Daytona Blue 350Z Touring/Nismo 2009 Platinum Graphite 370Z Touring/Sport (Sold) 2009 BMW 135i/Dinan Stage 2 software upgrade/M3 suspension piecies/Koni Sports/ETS FMIC/Alufelgen SF-71 wheels Last edited by ZPirate; 04-04-2010 at 12:29 PM.

04-02-2010, 05:07 PM	#9 (permalink)
KEVTEX Base Member Join Date: Nov 2009 Location: Montgomery, TX Posts: 119 Drives: 2010 370Z 7at sp pg Rep Power: 16	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.

04-04-2010, 12:33 PM	#14 (permalink)
Zsteve A True Z Fanatic Join Date: Sep 2009 Location: TX Posts: 3,298 Drives: the 2 balled club Rep Power: 22	can you feel any gains? Modshack if your MAF is to lean out the car, would I see any gains from it since I have the Cobb tune? Also would the cobb tube and your MAF fit with stock boxes? __________________ 2010 LS3 C6 Silver coupe corvette

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Intake?	AG370z	Intake/Exhaust	5	05-10-2009 08:37 PM
New Intake/Exhausts	BPAuto	Intake/Exhaust	10	03-18-2009 07:58 PM