Hi I just got my 2000 bonneville ssei not too long ago and I want to do some mods. If were going to do a CAI tuned PCM, colder plugs and a 3.4 pulley would I need to do any exhaust work? All I have now is the CAI, and I have deleted the resonator.

if your gonna drop a pulley size youll need headers or ported manifolds

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LUCAS Member # 534.
96 olds cutlass supreme SL 4 door 3100 4t60 *3.33 gears* *Fe1* 115K bone stock DD

what size superchager pulley comes stock on 2000 ssei

3.8 IIRC..

how many miles are on the car?

you always wanna repair any and all problems before modding

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LUCAS Member # 534.
96 olds cutlass supreme SL 4 door 3100 4t60 *3.33 gears* *Fe1* 115K bone stock DD

Stock pulley on a 2k is 3.8" as wake said.

To drop to a 3.6" pulley you'll want an intake, colder plugs, a well tuned engine, and a PCM tune at the least.

To go to a 3.4" pulley you'll want the above, plus a downpipe or headers, at the least. You will probably still get KR.

What is a well tuned engine? My personal definition is everything on the list below has been taken care of for the current interval, and there are no codes in the PCM and no other issues (vacuum leak, exhaust leak, etc).

Also, why delete the resonator? It's been proven to help reduce drone, and doesn't really improve performance. The front end of the exhaust is much more of a restriction than the exhaust behind the cat. If you plan on adding mufflers (also not a restriction until heavily modded), you will almost surely get drone on the highway.

Brand Suggestions are in the parentheses.

1987-2005 Bonneville / Buick 3800 Maintenance List

Run Seafoam through gasoline and intake every 5,000 miles. One pint of Seafoam in a half tank of fuel is a good mix. The intake is optional, but recommended.

Grease: Ball Joints, Tie Rods Every 8-10k ( Green Grease recommended)
Air Filter Every 15k (Amsoil EaA, Purolator PureONE)
PCV Valve Every 30k
MAF Sensor Element Cleaning/TB Cleaning Every 50k viewtopic.php?f=48&t=1661
Fuel Filter Every 15-25k (Purolator, AC Delco, WIX)
Spark Plugs Every 30-50k (NGK TR55 or Autolite 605) (Never Bosch)
Ignition Wires Every 30-50k (Napa Belden, AC Delco, Autolite Pro, NGK) (Never Taylor or Bosch)
Oil & Filter Every 5-6k or Every 6 months (Mobil1 or Amsoil)(Mobil1, Purolator PureONE, Amsoil EaO or WIX) (Never Fram) viewtopic.php?f=45&t=214
*Conventional Oil Every 3k/3 months(Pennzoil with a WIX (Napa), Delco or Purolator filter)
Transmission Flush or Pan Drop Every 15-20k (Always make sure filter is changed when flushed) viewtopic.php?f=45&t=10193
Cooling System Flush Every 25-50k or 3-5 Years (Peak or Prestone Green Coolant Only) (Never Dexcool)
Oxygen Sensor Every 80-100k (30k for non-heated) (AC Delco or Denso) (Absolutely never Bosch) viewtopic.php?f=48&t=794
Accessory Belt Inspect every 15k, replace every 100k, or as needed
Cabin Air Filter Inspect and Replace every 15k, or as needed in dusty conditions. (Note: 00+ Only)
Evap Core Cleaning Whenever Needed (Note: 99 and older only) viewtopic.php?f=45&t=2432

*Special Considerations*
All 3800s, LG3, LN3, L27, L36, L26, L67 & L32, especially important on vehicles factory installed with orange Havoline Dexcool Antifreeze/Coolant: http://www.dex-cool.net/
Lower Intake Manifold Gasket Replacement, every 80-100k (ignorance of this can allow coolant to enter your engine oil, this happening can cause irreversible lower engine damage, requiring replacement of subject engine)

Series II, Naturally Aspirated, RPO:L36:
Upper Intake Manifold Plenum Replacement, Every 80-100k (ignorance of this can allow coolant to enter your intake manifold, possible damage to occur can be hydrolock, irreversible damage to emissions devices, misfires, etc. Most times, engine replacement is required if ignored long enough.) viewtopic.php?f=53&t=1061

Series I, II, III RPO Code L67 & L32:
Change Supercharger Oil; Every 30-50k. (Intense Racing or GM Dealer) viewtopic.php?f=56&t=1690
Supercharger Belt; Inspect Every 15k, Replace Every 100k or as needed.

4/1/10 by 00Beast

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Bye Bye:

RIP sandrock

Let's see your CAI and see how it looks just to make sure it won't cause you problems down the road.

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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

It's not that we like to look at other guys tubes but we need to know how cold of a charge you are getting with your CAI.
If it's simply drawing hot underhood air, then... better stick with the 3.8.

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2000 SSEi - SilverBullet - 78,000 kms, 4" "straight shot" custom headlight ram air inlet, TOGs, 1.9's, Lsd, 2.9-3.4"MPS 10-15 psi, Ported GenV, EGR eliminated, OR pushrods, oil volume kit, trani cooler & shift kit, Titanium retainers, 90 lb springs, 160 Stat, 42# injectors, Fuel pump voltage increase, Wideband O2, 3" to dual 2 1/2" Magnaflows, Snow Meth/water injection, after SC temp gauge, 255/50WR17, timing commander set 15-18*@WOT, 2 speed Fan over-ride, disabled DRL, Solid motor mount, Meziere Electric water pump, adjustable fuel pressure regulator, Drilled & slotted rotors/ceramics, GXP sway bars and STB, Upgraded and rebuilt transmission with ZZP 2500 rpm stall TC, Pioneer Bluetooth stereo with sub and 800 W amps, PB 13.5 quarter, (April 2014 car of the month)

Yup. Many people are pretty darn sure they have a good intake setup, but we've found problems over time with many. The wrong intake setup can cost you dearly as you start to mod. And sometimes what's wrong is very subtle.

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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