urbanhunter44

iTrader: (3)

I just stuck one on my car and the increase in performance (and city MPG for that matter) is just amazing, but I was wondering if there is a downside to giving it all the air it needs? Something that could hurt the engine?

I realize this is a stupid question, and I can't think of any possible downside, but just making sure.

Also the sound of my car has changed alot, kinda cool actually.

Thanks guys!

.. and yes I'm aware that the dual snorkel is better as it grabs cold air, but I don't have one and don't have the time to make one

Coop91SRS

Only 2 things I can think of off hand.. you're motor is getting hot air from the engine bay.. not good for performance.

Other is the possible, altho very remote if you ask me, of the TB freezing due to not having the ability to draw heated air off the manifold.. if you live in Antarctica or something.. I'd probably put the original air cleaner on it.. if not.. you'll be fine.

urbanhunter44

iTrader: (3)

Lol tb freezing, yeah I guess it could... lol

Yeah I know about the hot air, but it's pretty cool here plus my mechanical fan is blowing air on it, giving it a slight wind chill factor. And it is a huge a$$ improvement over the stock drinking straw air cleaner.

Plus I'm planning on buying a cowl induction hood anyway...

ShiftyCapone

iTrader: (7)

A lot of hot air is always better than a little slightly cooler air. Even the dual snorkel only draws in air that is minimally cooler. You are fine with what you have.

five7kid

iTrader: (14)

Following example isn't 3rd gen, but the principle applies.

The '57 in the sig. I keep records for each run. Late last season, I rigged up a cool air dual snorkel. 1st run the car ran a tenth quicker. Maintained that with subsequent runs.

Just to be sure, the next week I had some extra time trials (Div V finals, if memory serves), so I ran the dual cool one run, open element the next, dual cool the third, open element the 4th. There was a tenth difference between the 1st & 2nd runs, ~8 hundredths between the 2nd & 3rd, and ~12 hundredths between the 3rd and 4th - in each case, the dual cool was the quicker (the first run was mid-morning, so the ambient air was heating up with each run).

Now, these weren't "round-robin" runs. I cooled the car down between each run, just like I normally do, and had to wait for my class to be called before I could make another run. The only differences were air density (dominated by air temp increases)and the air cleaner. In fact, the worst dual cool run when the air temp was the highest was faster than the best open element run when the air was cooler.

So, where did the difference show up in the time slips? Believe it or not, in the 60' times. Even though the engine was relatively "cool" (~155 degrees coolant temp), there was enough heat coming off the engine to make that much difference between open element and cool air inlet.

That's what I've observed as the drawback to an open element.

ShiftyCapone

iTrader: (7)

Making a modified TPI style intake is the best route for TBI and carb. I do not like the 3rd gen dual snorkel because you have to gut the thermacs and the placement of the scoops leaves a little to be desired. r90camarors just recently did a similar test as Five7 just described. He too saw results with his cold air set-up over an open element but the gains were minimal and he would really need to do a little more WOT tuning to see the real results. His cold air though actually takes air from the road where he is getting real ambient air. Numerous other TBI's have made the switch and didn't see any real track gains to justify the cost. That is whay I say "a lot of hot air verses minimaly cooler air". However, when done properly, I am confident that you can see results like five7 mentioned. Assuming that his dual snorkel is not routed the in a manner like the 3rd gen unit.

urbanhunter44

iTrader: (3)

Thanks guys!

Shifty are you talking about rigging up like a box thingy over the top of the carb, with a CAI coming off of it? Say a 4" - 4 1/2" size round tube and running it down to the ground where it can grab air?