Intake System Upgrades

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   As you can guess, the snorkel intake design isn't the most free-flowing design known to man. Helping the engine and turbo breathe with an air box replacement filter will not only decrease turbo spool up time, it greatly helps the high rpm powerband. It's only drawback is the increase in the intake noise at WOT.  It won't effect daily drivability.

Company Name

Part Name Filter Type HP Gain Price *
AEM TurboFlo K&N Cone 10-15HP US $180
K&N Filter Cone Cloth 8-10HP US $150
Filtercharger 3-5HP US $50
Recharger Filter Oil       US $8
HKS Super Powerflow (86-88) Oiled Foam 10-15HP US $160
Super Powerflow (89-91) 10-15HP US $135
PowerFlow Filter   US $30
Bonez Street Comp (86-88) Oiled Foam    US $135
Street Comp (89-91)     US $125
Race Kit (86-88)   US $125
Race Kit (89-91)   US $115
A'PEXi Super Intake (89-91) ?   US $190
Racing Beat Foam Air Filter Element Oiled Foam   US $21
Pettit Racing Induction System K&N Cone 10HP $150
Trust (GReddy) Airnix Dry Foam 10HP $250

Notes: The K&N Filtercharger replaces the factory filter, not the air box itself. The Filter Cone would replace the actual air box which gives the most performance gains. I personally recommend the K&N Filters because they are washable. I own a HKS SuperPowerFlow and its oil based foam filter is not washable (or so HKS claims). Many people do clean the HKS filters however.
    If you don't have the money to spend on a full air box replacement, simply buy a K&N Filtercharger or any factory air filter replacement that flows reasonably well. It's not recommended that you remove the joint between the snorkel and air box. This simply pulls hot air off the radiator hose and reduces the amount of cool air supplied by the snorkel.

re-air.jpg (18960 bytes)


Other Intake Upgrades

Company Name Part Name Application HP Gain Price *
Rotary Performance High Flow Throttle Body Non-Turbo      US $445
High Flow Throttle Body Turbo II       US $445

* All prices are subject to change without notice, contact appropriate
vendor for latest prices and ordering information.

Picture Credits RE Amemiya Sponse Air Cleaner


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Last Updated: April. 18, 1999, by: Mike McLeish

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