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COLD AIR INDUCTION SYSTEM

Were you one of those Turbo Regal owners who bought in to the ram air theory for better performance?  It has been proven that the canisters used in those systems are more of a restriction then a performance enhancer.  I relocated the air filter on my 1987 Grand National to in front of the radiator support and got rid of the ram air canister, scoop and hose that was previously on the car.  Now my motor gets fresh cool air from out of the motor compartment thru a huge 4" inlet K&N filter.  Everyone knows the colder the air, the more horsepower you can make.  This system works great on my GN and I am now offering it from my website on a first come, first served basis for owners of 86-7 Buick Turbo Regals.  Click on this link for more information. www.buickgn.com/bigmouth.htm 
Note that the kit pictured is used with the newer style Chevy MAF sensors that were orignally used on the Impala SS This is a good view of where the rubber 90 degree elbow goes thru the radiator support After relocating the vapor canister over about 1" you have about a 1/2" clearance to the pipe. Nice view from the front of the car.
The heart of the system, a K&N 9" cone filter with a 4" opening The filter attaches to the rubber elbow by using a 2" long metal sleeve.

I took this shot when I had the front bumper off when I was putting an aluminum bumper brace on. The filter hangs just about even with the stock air dam and can not be seen unless you crawl under the car.

 This view shows how you have plenty of clearance to the frame rail, the rubber elbow snugly fits into the radiator support and behind the headlights. It has just enough flexibility without the need for any brackets

The 90 degree rubber elbow that goes thru the radiator support is designed for turbo diesel air intake applications and is more than sturdy enough for this system. This is also strong enough to support the filter without any additional braces on the filter as used on other kits.  The pics of the filter were taken with the front bumper removed.

PICS OF OUR NEW 3.5" SOLID MAF PIPE WITH THE LS1 MAF SENSOR INSTALLED ON MY GN
3.5 INCH MAF PIPE THIS PIPE IS ONLY NEEDED IF YOU ARE USING THE 3.5" LS1 MAF SENSOR

PLEASE NOTE THAT YOU MAY HAVE CLEARANCE PROBLEMS WITH THE IAC WHEN USING THIS SIZE PIPE!

 Chevy MAF Picture of Chevy MAF with dressup plate

My GN has undergone many different MAF pipe styles.  Starting with the GM stock hose with a K&N filter I changed to a ATR solid pipe with the stock MAF sensor.  I was never really happy with the fit so when I developed my Big Mouth Cold Air System I figured why not make my own pipe.  By cutting rubber angled adapters I was able to use a straight section of pipe instead of the funky bent up ones offered from various TR vendors.  

When the Translator Plus system came out that allowed you to use late model Chevy MAF sensors I upgraded to the 3" Impala SS  setup and adjusted my cold air kits to make up for the shorter length of the newer style MAF sensors.  A recent customer requested a 3" MAF pipe to fit his 3.5" LS1 MAF sensor.  To make sure everything would fit properly I bought one myself and converted the GN from the Impala SS 3" up to the bigger sensor.  While I was at it I figured why not make a 3.5" MAF pipe to go with it!  Finished fitting everything and it works out great.  Clearance is real tight to the up pipe and I would also recommend relocating your IAC sensor as it would be right up against the rubber adapter that goes to the turbo.  Never could figure out why Buick designed it this way.  It is easy to relocate the IAC with an ANGLE BOSS available from www.BOPengineering.com.  This aluminum block makes the IAC angle over towards the driver's side of the car making servicing this device a lot easier.  Please note that I have a 1/8" Power Plate spacer installed under my upper plenum but I believe the 3.5" pipe will still fit with a stock setup.  The 3.5" pipe is available in chrome and aluminized steel material like our smaller 3" pipe.  I would recommend our 3" MAF pipe if you are still using the stock MAF or the Impala SS MAF.  This pipe is to take advantage of the larger 3.5" MAF sensor.  

[ Home ] [ Up ] [ OUR GN'S HISTORY ] [ FEATURES ] [ MOTOR PAGE ] [ ENGINE & COMPUTER CONTROL ] [ THROTTLE BODY MODS ] [ COLD AIR INDUCTION SYSTEM ] [ MY ALCOHOL INJECTION SYSTEM ] [ INTERIOR ] [ OLDER PHOTOS ] [ WELD WHEEL PHOTO PAGE ] [ TORQUE THRUST WHEEL PICS ] [ MISCELLANEOUS MODIFICATIONS ] [ EXHAUST SYSTEM PAGE ] [ OUR 1966 PRO STREET CHEVELLE ]