I bought a Stinger intake from halltech just before Jim moved to Wisconsin. After installing it, I started seeing lean codes. Others with screenless MAFs had the same problem. My initial SOTP gauge was so favorable that I didn't want to simply take it off and go back to stock. Nor was I looking forward to an expensive dyno tune to fix the issue.

Assuming turbulent airflow was the problem, I decided to cut a (6x6) hole in the shroud centered under the warhead filter. I then canabalized a clothes dryer vent and mounted it in the hole forming a makeshift cold air scoop. Now the filter can get additional cold air from underneath. My theory was the additional airflow might smooth the overall flow passing the MAF wires thus giving the PCM more accurate readings and eliminating any lean condition due to PCm errors.

Well, I've put about 1000 miles on the car and haven't had any check engine lights. I'll consider it a success if I get another code free 1000 miles. The car performs like a champ and I continue to get a much better throttle response with the Stinger than I did with the stock box. And that includes the zip tie mod with K&N filter. I tried many different combinations between stock and stinger but only the full stinger gave a definite performance boost.

I can only speak for my experience with the Stinger, but the performance boost I felt from it was just too good to give up on. That's why I tried the scoop mod. And the best part was all it cost me was $6 and a couple hours of time to install.

Thought I would share my experience with those owners of cars with screenless MAFs who are sitting on the fence regarding getting a Stinger.

mark

 

Hey MM, can you be a little more precise regarding the dryer vent, I am waiting for my Hallteck stinger to arrive for my 04Z and from other installs on the forum I will be getting codes, Sound like a great fix and cheaper than a dyno tune. Got any pic of your install? I would be sure be willing to give your cure a shot.

 

RoHo,

Since I had no way of knowing if the mod would work, I didn't document the install. I went to Lowes and picked up a clothes dryer outside vent assembly. They had two sizes. I went with the smaller one. That way I knew the filter would span the opening with no danger of falling in. The only piece I used was the plastic part that would sit on the outside of the house. It directs the exhaust down because of its shape. Turned upside down sitting in the hole in the shroud, it directs air up into the filter that sits on top of it.

I outlined the filter with it installed with a white crayon on the shroud. I then pulled out the Stinger and measured the scoop for the holes dimensions. BTW, I did this with the shroud installed. I didn't want to pull it out if I didn't have to.

I then measured and drew lines for the cutout in the center of the outlines I made of the filter. This would position the scoop in the center of the filter. If done correctly, the top cutout line will be just below the bottom of the shroud's indented area. Do not cut into the indented area.

I cut the hole out with a carpet knife. I then fitted the scoop into the hole marking the four corners to drill holes for screws. I then removed the scoop and drilled the four holes. I used 4 clip nuts over the holes and 4 machine screws to fasten the scoop to the shroud. I then reinstalled the Stinger and the filter now sits on top of the scoop completely hiding it from view.

Hope this helps.

mark

 

Hey Bro--Thanks much for the info, is sure do appreciate it. I just know from other posts that my 04 would be throwing codes one the stinger is installed. Even if it does this is still a superior way to go and I will be following your directions. I talked with a guy at an auto cross I was at that was using a Halltech stinger and he had nothing but thumbs up for the unit, this is what made me lean toward the stinger, and now with the way you have installed yours it's actually turned into a cool air unit.
Way to go MM

Thanks again

 

Thanks RoHo. Go for it. You won't be disappointed. It's a great unit.

mark