Anthony Franz

So I have a 91 GTA and I'm debating on removing the front fog lights and blinkers from the bottom of the bumper. After that I would use some sort of tubing and send the air from both sides through their own air filters and then straight to the throttle body. Is this a decent idea and what, if there are any, problems could this cause, I don't want to do this without opinions incase I'm overlooking any future problems. Im thankful for any feedback

Base91

iTrader: (1)

Where/how would you relocate the lights? I've been thinking of that but not for a street car.

Anthony Franz

Im more worried about getting my blinkers back, im not too worried about my fog lights. I don't want to do anything crazy but maybe get blikers to install into my mirrors and I haven't driven it in a while so I don't remember but if they don't already, id get my fog lights wired as blinkers too. I know its not the best solution but theres no place id want to try to stick any lights. If it became a problem there may be a way to even mount them at the bottom of the bumper while trying not to make it look too bad

Dakota W.

There's no point in going through all of that for a cold air intake. You'll only get a 2% increase in power.

Anthony Franz

I know I wont get much out of it, its just a thought I had, I mean I have never seen a cold air intake kit for my car so I wanted to come up with my own

LB9GTA

iTrader: (1)

What I did on my 1991 GTA

Anthony Franz

It looks good, what type of tubing did you use and was the increase worth the time or money? If anything it looks good no matter what

Dakota W.

I'm sure the only increase he saw was throttle response. That's not a cold air, and being that close to the radiator isn't going to make it any colder either. All you really get with a ram or cold air intake is more throttle response, so it feels like more power, but in all reality it's about 3 more hp.

Anthony Franz

Out of curiosity how does a cold air intake affect your throttle response, I thought it just gave you a low number hp increase, and if there was some sort of box to control the air temp in the area would it then be cold air?

fozzi58

It would be a lot more efective if you mounted a 1" or 2" high by 10" wide scoop just under the front bumper on each side or a wider on one side and directed the air flow up to the airboxes.

I did this a while back (in '97) on my 87 TA. I used some hvac ducting from Home Deeps, some 7" flexible tubing and cut a hole in the side of the air box and mounted hvac ducting to it. Keeps fog lights in position and water intrusion is not a problem because of oil on K&Ns.

Or do what lb9 did and use metal ducting and custom make an air box using the camaro flat filters instead of a round or cone.

Where there's a will there's a way.

Dakota W.

The stock piping is restrictive. Using bigger pipes allows the engine to actually get to the air it needs. Whether that air is warm or cold doesn't really matter, just as long as you aren't getting your air from a 200* source.

TTOP350

iTrader: (8)

SLP used to make CAI kits for your car. They used the stock plastic tube to a nice OEM looking plastic box that bolts to the PASS side of the engine compartment and contained a K&N filter.
They also offered a dual cold air kit that was used on the 92 Hawks. It has 2 plastic air boxes and required the batt 2 b moved to the rear.

Here is my old beater 89 with the SLP cold air box and custom 4" aluminum tubing I'm building.

Anthony Franz

Is there anywhere I can still get the slp set up, not the dual setup, but the one with the box on the pass side?

TTOP350

iTrader: (8)

They come up for sale used from time to time. I'll keep my eyes open for ya.

myroc86

Id try to fab one up yourself Anthony. Its hard to see in that picture but all it looks like is a simple box.


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Ingram78

If you cut a hole big enough for the intake tube to pass through the battery tray and put a filter on the other side/bottom of the tray, you wouldn't need any box. And I can guarantee you that box setup will still absorb some heat from the engine bay.

TTOP350

iTrader: (8)

The SLP box is a OEM type plastic/vinyl/abs or whatever.
My under hood temps are very low compared to a stockish 3rdgen, 160 t-stat, aluminum heads, no A/C, and Jet hot coated headers..

The very 1st SLP box setups were aluminum.

The only problem I see with the filter on the bottom side of the battery tray, is when it rains. It could have a better chance of sucking water up.

Dakota W.

That's what splash shields are for.

TTOP350

iTrader: (8)

And outer filter covers but since I'm old,
I don't like:
laying under my car for basic filter maintenance
and drilling huge holes in my car.
I do like:
a semi OEM could have built it look,
filter in a easy spot to get to,
I'll stick w the SLP setups.

Juve88GTA

I made this a couple years ago for a Firebird I had

Dakota W.

Not a cold air intake.

morrow

make a aluminum tube that runs over to the driver or pasenger side, cut a hole in the tray where the stock filter canister use to be and run it under the car in the wheel well... that cold air also. i did one like that for mine..

LB9GTA

iTrader: (1)

I used 3.5" exhaust pipe.

webn237

For the open air intakes does it really make much of a difference? Its just sucking in the hot air from the engine bay isn't it? I'm trying to find a way to make a air filter for my 86 trans am and I'm trying to get the best result from it as I can. I do like the setup of the two air filters going right into the throttle body. It looks pretty sweet but how effective is it?

Dakota W.

If both flow the same amount there is a 2% gain with colder, more dense air. That's all.

webn237

How'd you make the T shape filter?

Ingram78

2% of 350hp.....that's 7hp. If I'm going through the trouble of fabbing a cai I'd get that too.
Plus if your spraying or running boost that cooler air will be worth a lot more before detonation.

Dakota W.

That's nice that you have 350hp. The OP doesn't. I doubt the OP is spraying or boosting either. That 2% is mostly torque, not hp.

drknow90rs_ss@y

iTrader: (3)

I think you would be best off trying to fab up something from a Camaro TPI car using the stock airbox. You are gong to have to do some cutting, ut the parts are out there an you can use all IROC parts.

Ingram78

Lol, I run 6's in the 1/8, 10's in the 1/4....I passed the 350hp threshold in high school.

You gotta build hp somewhere so why not get all you can since you are going though all the trouble of fabbing it up yourself. My pervious post was not just directed to the op but all who are contemplating building their own. That kind of "oh well it's just 2%" is the main reason the fox body mustangs are "generally faster" than third gens.
Don't get me going on a rant here!!!

drknow90rs_ss@y

iTrader: (3)

LOL,He HAS a good point there! 2% here, 2% there, and pretty soon you are talking about some pretty big numbers!

Dakota W.

2% of nothing is still nothing though. Yes, you have to start from somewhere, so do stuff that will actually make more power.

Ingram78

I guess man, just how much more would you expect?

Here's my cowl cold air scoop.

Dakota W.

Cowls are a different story. Cowls actually do make a difference.

fatalicshock

Cowls do about 2% lol

Dakota W.

Cowls make more than 2%.

Ingram78

It better be more than 2% or its going in the trash!! Lol

lmidden

with tpi caai really wont make a difference since you have to route the tubing next to the radiator. simple as that you mainly feel the less restrictive air filter

racerx520

iTrader: (1)

a cowl wont do much for a TPI, in theory, cold air injection (if its actually cold out) would theoretically expand inside the motor to increase the power....i did a "cool air intake" which is like LB9GTA's.
i would never do a cold air intake, the power is just theoretical for it. I'd rather keep my fog lights and do a cam than cold air. IMO

LB9GTA

iTrader: (1)

I could make mine into a cold air intake but the practicality goes down the toilet with it.

Once that extra pipe is added closer to the ground(also closer to more dirt, stones and water) the bigger the chance to suck up something.

fozzi58

The water would be blocked by a typical air filter and better protection from an oil added filter (e.g. k&N)

The rocks/debris issue is resolved with hot gluing or bolting a screen from an old window or some tight mesh "chicken wire" to ducting from a household HVAC (central air) system. Or hit the bone yards for an ABS piece from another car that might work. I did a bunch for friends of mine back in the dya on F cars, a couple fox bodies, and a Supra.