I decided to jump the gun and do my first real "mod" today. No pictures of right now, but I basically followed this little guide and it turned out flawlessly. It makes a hell of a noise, is it normal to hear it whine and suck like its a Dyson? Also, I did have a question about the tube that's in the attached box here:





Is the tube here supposed to be cut off, or kept? Because since I've done this mod, I've noticed my temps being near the 200* mark. Kind of scary actually, but I imagine it's just paranoia. Thanks for all the wonderful guides and help here guys, I just love all the info!

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what did is called "gutting the air box" its a nice little thing you can do to help out your car with little to no cost. you will most likely be told to get a FWI (fender well intake) system for an air intake. if you are regarding to the stock tube that connects the box to the TB. get rid of it. cant remember who on this site told me but what it does is it decrease the constant air flow. they sacrificed performance so they could make the car quieter. or something alone those line.

here is a link for the Intese FWI (many people on this forum will swear by it).
http://intense-racing.com/Merchant2/mer ... _Induction

here is a link for the recommended tubing to use or as some people have done is replace the stock tube with a piece of rice pipe
http://intense-racing.com/Merchant2/mer ... _Induction

hope that helps

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http://i1190.photobucket.com/albums/z447/razmatazz1/Untitled-1.jpg

oh and that sucking noise is normal. its just your car getting more unrestricted air. its nothing bad. just a good indicator that you did it right. it will go away when the car warms up

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http://i1190.photobucket.com/albums/z447/razmatazz1/Untitled-1.jpg

I would certainly do an FWI, but the cost outweighs the need at the moment. As to the long tube I'm referring to, it's actually inside the box still. It's basically the fine that would have gone into the hole on the section that was cut out. Sorry if it's not making sense, just wish I had my camera for more pictures!

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yeah. that would be best. unfortunately i havnt seen a 2000+ models airbox (i got a 96). some one will be by with info on that box for ya. unfortunately all i can say with my experience is to take out all the tubes inside the box. but leave the mounting for the filter, and completely cut off the front face of the box.

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http://i1190.photobucket.com/albums/z447/razmatazz1/Untitled-1.jpg

Heres my take on the air box mod, not sure if my idea helped air flow into the throttle body or not. But gutting it definitely helped it breath a little better.

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1999 Bonneville SE with the heart of a 07 Grand Prix

i litterally spent the last 45 mins looking for those pics......

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http://i1190.photobucket.com/albums/z447/razmatazz1/Untitled-1.jpg

See I referenced yours, but the 2000+ models have different boxes from the pics I've seen. I'm just concerned that I missed a piece, and by doing so, I've affected the cars cooling by causing a weird turbulence.

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Oop's, I missed that you were a 2k bonnie, sorry about that.

Here's the one that pertains to your car.
http://www.pontiacbonnevilleclub.com/fo ... 12&t=21584

The air box mod will have nothing to do with your engine temps. If it's starting to run hot its either the water pump or thermostat (leaning towards the thermostat).

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1999 Bonneville SE with the heart of a 07 Grand Prix

Ahhh, I haven't seen that one before! The way he cut his though, just seems to have little rigidity, especially being over the PCM, but what do I know? (thanks for the link though)

As for the thermostat, I was considering doing the 180* adjustment. Problem is, I don't know how to clean out coolant, and if I were to do it, I would need the fans retuned which I can't do. I'm considering just getting all the replacement parts and giving them to a mechanic, and saying "*fook* it, put this on"

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The air box is pretty strong, as a side note I think Harofreak00 has a FWI kit forsale for 100$, just shoot him a PM to see.

Ok, so with a stock 195* thermostat you will see your cars normal temp range should be right around there. If you go to a 180* thermostat, going down the road your car will run right in this range. It's when your in traffic and the coolant is all warmed up that your temp will rise to 205*-215* range before the low speed fan will kick on.

This is where a reprogrammed PCM with lower temp fan settings come into play. Or another option for you could be a high speed fan override switch. This still allows the PCM full control over both low and high, but you get manual control over the high speed fan.

These 2 techinfo articles will help you with a coolant flush and how to fill it afterward.
http://www.pontiacbonnevilleclub.com/fo ... 45&t=15064

http://www.pontiacbonnevilleclub.com/fo ... f=53&t=159

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1999 Bonneville SE with the heart of a 07 Grand Prix

205-215???? is that normal? cause anytime my temp goes above 200. its time for all the windows to go down and the heat to be cranked. maybe i just over worry.

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http://i1190.photobucket.com/albums/z447/razmatazz1/Untitled-1.jpg

00+ can't wire in a fan override, not that I've seen at least.

215 is perfectly normal. It's when it gets upwards of 250* that it's time to roll down the windows and crank the heat....

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Bye Bye:

RIP sandrock

The way I cut the air box did NOT weaken it at all. It's every bit as strong as it was. Just don't cut it past the edges so you still have alittle bit left on the surface your cutting. That way it will still have the structural integrity. If you look at the photos I didn't cut clear to the edges.
These air boxes are extremely strong and will take cutting it like I did. Actually it was easier then doing the 97 air box from my old Bonneville.

I changed my thermo to a 180 and did a complete flush to get rid of any Death Cool . Took over an hour just to get it to my satisfaction. Once I replaced the coolant with new "green stuff" and thermo it did run cooler. Usually around 190 to 200.
Sitting in traffic for a little bit brings it up to maybe 220.
Maybe the waterpump isn't working up to it's fullest? Just a thought.
Only way to get the fans to kick on earlier is to have the PCM reprogrammed. If your gonna do that there's more then just that I'd do at the same time or your'll be paying everytime.

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Cadet Blue....Not perfect...But paid for.
K&N Air Filter and Gutted air box. 180 Thermo Cleared Corners More to come.

"Unfortunately there is one thing standing between me and that property: the rightful owners."
- Hedley Lamarr, Blazing Saddles
"One morning I shot an elephant in my pajamas. How he got in my pajamas, I don't know." Capt. Geoffrey T. Spaulding - Groucho Marx - Animal Crackers

I'll make a mental note of that for the future, thanks.

If you do end up doing the water pump with the thermostat and coolant flush, get a series I water pump with a pulley. The series I pump has a cast impeller with a better design (moves more coolant) vs the series II stamped one that inferior. Just make sure you get a pulley with it because a series II pulley will not work. The seres I pulley is cut out in the center for the pump.

Here's a post that shows the 2 different pumps: (it's the 5th post down from the top)
viewtopic.php?f=20&t=12668&start=0&hilit=series+I+water+pump+pictures

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1999 Bonneville SE with the heart of a 07 Grand Prix

Not true. The noise is because you removed the sound baffles from the airbox. It has nothing to do with the volume of air. Your car is still pulling the same amount at idle as it was before.

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Click here for mod list for both cars
93 SSEi, 95 SLE (supercharged) 97 Buick LeSabre Limited
PontiacDad at WCBF '04: Cruise control? That's like surrendering!
Comprehensive guide to troubleshooting, rebuilding, and modifying Eaton Superchargers

Who isn't really stupid

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Cadet Blue....Not perfect...But paid for.
K&N Air Filter and Gutted air box. 180 Thermo Cleared Corners More to come.

"Unfortunately there is one thing standing between me and that property: the rightful owners."
- Hedley Lamarr, Blazing Saddles
"One morning I shot an elephant in my pajamas. How he got in my pajamas, I don't know." Capt. Geoffrey T. Spaulding - Groucho Marx - Animal Crackers

*dang*, looks like I've gotta get out the Dremel again Thanks for the tip though guys.

And before I go to do this, how and where do I find/change/and make sure my transmission fluid is ok? I tested it today, and it was very dark red (bad right?). So any thread or info would be great

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http://www.pontiacbonnevilleclub.com/fo ... 45&t=10193

Pretty much the same procedure as on your car.

Dark fluid isn't bad, just means it's time for a change.

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Bye Bye:

RIP sandrock

How did I not see that?! Thanks 00Beast!

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