anyone else having rain issues with injen cold air?

ZForce · 04-20-2011, 12:53 AM

I will see about getting a pic posted up.

tanamerra · 04-20-2011, 04:40 PM

Thanks ZForce.

370zFORme!! · 04-20-2011, 05:20 PM

Zforce this is news to me, I have had my hydroshields for about 1000 miles and I noticed no difference in how the intakes suck air. I have no loss of power like you explain. Maybe yours were installed incorrectly although I dont know how thats possible, as its pretty simple.

ZForce · 04-21-2011, 01:09 AM

Yeh it took me awhile (like one long days ride) to see and feel the hydro shields robbing air flow. Agree there is no way the shields could be installed incorrectly, it's pretty straight forward. There are two 370Z's in the garage so it makes it simple for a comparision. Both are set up identical except car # 2 does not have the hydro shields installed. Upon test driving both it was very apparent car # 1 w/hydro shield was getting robbed of air flow.

Car # 2 showed some increase in air flow (even though I would have made the cut a smaller hole) being it did not have the hydro shields installed.

Once I did my mod, instant free flowing air across the filters. Good thing about it is I can put it back to stock and test it again anytime. Keep in mind my car also has other mods which may be the difference or no difference you described.

I am running a slighty modded Nismo S-tuned CBE with Berk HFC.

If you are not hearing the engine /CAI making a garbled sound at low rpm from 1500-3000 rpm, then you are probably ok.

If you want to test my mod with the option of setting it back to stock, no harm done, just peace of mind. I really think Injen did not test the air flow and restriction that I found when doing their R&D. I cannot see any other place where the outside air flows thru the front facia to reach the air filters other than from the small 1" hole on the under belly plastic cover that protects the underside of the engine and oil pan. There is some air flowing down the tubes from inside the engine bay as there is an opening in the inner fender well that does provide air. I tested this by covering the opening and sure enough it garbled and lost power.

I will try to get some pics up soon of this mod and the weather stripping mod.

shadoquad · 07-23-2011, 04:41 PM

Quote:

Originally Posted by m4a1mustang

I had the injens for a good 15,000 miles or so and never had any water issues. Granted I was always extremely careful with puddles.

I bought mustang's injens for my Z and haven't had any problems, either. I've had them on the car for about 5000 miles.

Glokwork · 07-23-2011, 09:33 PM

Quote:

Originally Posted by shadoquad

I bought mustang's injens for my Z and haven't had any problems, either. I've had them on the car for about 5000 miles.

Same here, no problems and I love em

tanamerra · 07-24-2011, 08:14 AM

Had them on my Nismo for over 6,000 miles and have had no issues even during heavy rain showers.

AdobePhil · 02-01-2012, 11:55 AM

I just had my injens installed about a week ago and put the hydro shields on from the get go.

I've ran about 600 miles with no issues, no garbled sound, and left her running in one of the most viscous, touchless car washes that I know of, complete with an under carriage wash.

No issues what so ever.

tanamerra · 02-02-2012, 08:54 AM

As mentioned before had Injens on my Nismo for over a year. No hydro shields and no problems even in heavy rain storms.

04-20-2011, 05:20 PM	#33 (permalink)
370zFORme!! Premium Member Join Date: Mar 2010 Location: SoCal Posts: 1,459 Drives: 2012 6MT STiffy Rep Power: 17	Zforce this is news to me, I have had my hydroshields for about 1000 miles and I noticed no difference in how the intakes suck air. I have no loss of power like you explain. Maybe yours were installed incorrectly although I dont know how thats possible, as its pretty simple. __________________ 87' Honda Civic Hatchback: Kaput @ 288,000 miles, 90' Toyota Celica: Kaput @ 175,000 miles, 93' Mitsubishi 3000GT VR4: Kaput @ 138,000 miles, 06' Scion Tc: Traded in @ 64,000 miles, 10' Nissan 370z: Traded in @ 25,000 miles, 12' Subaru Impreza Sti: Current.

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04-20-2011, 12:53 AM	#31 (permalink)
ZForce A True Z Fanatic Join Date: Jul 2009 Location: Roseville, CA Posts: 2,359 Drives: 09 370Z Tour + Sport Rep Power: 20	I will see about getting a pic posted up.

04-20-2011, 04:40 PM	#32 (permalink)
tanamerra Base Member Join Date: May 2010 Location: Delaware Posts: 145 Drives: 2010 370Z Nismo Rep Power: 15	Thanks ZForce.

04-21-2011, 01:09 AM	#34 (permalink)
ZForce A True Z Fanatic Join Date: Jul 2009 Location: Roseville, CA Posts: 2,359 Drives: 09 370Z Tour + Sport Rep Power: 20	Yeh it took me awhile (like one long days ride) to see and feel the hydro shields robbing air flow. Agree there is no way the shields could be installed incorrectly, it's pretty straight forward. There are two 370Z's in the garage so it makes it simple for a comparision. Both are set up identical except car # 2 does not have the hydro shields installed. Upon test driving both it was very apparent car # 1 w/hydro shield was getting robbed of air flow. Car # 2 showed some increase in air flow (even though I would have made the cut a smaller hole) being it did not have the hydro shields installed. Once I did my mod, instant free flowing air across the filters. Good thing about it is I can put it back to stock and test it again anytime. Keep in mind my car also has other mods which may be the difference or no difference you described. I am running a slighty modded Nismo S-tuned CBE with Berk HFC. If you are not hearing the engine /CAI making a garbled sound at low rpm from 1500-3000 rpm, then you are probably ok. If you want to test my mod with the option of setting it back to stock, no harm done, just peace of mind. I really think Injen did not test the air flow and restriction that I found when doing their R&D. I cannot see any other place where the outside air flows thru the front facia to reach the air filters other than from the small 1" hole on the under belly plastic cover that protects the underside of the engine and oil pan. There is some air flowing down the tubes from inside the engine bay as there is an opening in the inner fender well that does provide air. I tested this by covering the opening and sure enough it garbled and lost power. I will try to get some pics up soon of this mod and the weather stripping mod.

07-24-2011, 08:14 AM	#37 (permalink)
tanamerra Base Member Join Date: May 2010 Location: Delaware Posts: 145 Drives: 2010 370Z Nismo Rep Power: 15	Had them on my Nismo for over 6,000 miles and have had no issues even during heavy rain showers.

02-01-2012, 11:55 AM	#38 (permalink)
AdobePhil Base Member Join Date: Mar 2011 Location: Palm Harbor FL Posts: 211 Drives: 2010 370z Sport Trim Rep Power: 14	I just had my injens installed about a week ago and put the hydro shields on from the get go. I've ran about 600 miles with no issues, no garbled sound, and left her running in one of the most viscous, touchless car washes that I know of, complete with an under carriage wash. No issues what so ever.

02-02-2012, 08:54 AM	#39 (permalink)
tanamerra Base Member Join Date: May 2010 Location: Delaware Posts: 145 Drives: 2010 370Z Nismo Rep Power: 15	As mentioned before had Injens on my Nismo for over a year. No hydro shields and no problems even in heavy rain storms.