Shop 951 STAGE 1 & 2
951 STAGE I & II INTERCOOLERLindsey Racing Stage I and Stage II Intercooler for the 944 Turbo.
Stock (top) Stage I (center) Stage II (bottom) intercoolers. The modifications performed in the Stage I upgrade corrects major restrictions in the factory unit resulting in an 18% (205CFM to 248CFM @ 28" of water column) increase in the flow rate resulting in quicker spool up of the turbocharger and better throttle response. This is accomplished by replacing the tank on the inlet (left) side of the intercoolers shown (click on photo). 75% of the gain from modifying the stock intercooler comes from the Stage 1 upgrade! We recommend our Stage I Intercooler for use on stock cars to ones with moderate modifications. Both Stage I & II modifications improve the dispersion of the air through the cooling tubes resulting in more efficient cooling of intake charge air by a 20 degrees reduction in inlet temperature. Cooler intake air equals additional HP. Reduced restriction mean more air/fuel to the cylinders equalling additional HP.
The stage II modifications correct remaining restrictions and is recommended for more modified or racing engines requiring maximum flow. The percentage of CFM improvement is even greater. This is accomplished by removal of the outlet (right) side tank and making many internal modifications which are not visible in the photo and some external modifications. These modifications are clearly visible once you have removed your stock unit and make a side by side comparison. To give you an idea of the enlargement... If you look inside the end of the outlet on the stock intercooler, you cannot see any of the core. On our modified Stage II, you see 75% of the core. We recommend our Stage II Intercooler for modestly modified to all out race applications!
Both intercoolers will supply a wider power band and a reduction in Horse Power drop off at higher RPMs where you need the additionl flow.
The more your engine is modified, the more you benefit from the Lindsey Racing Intercoolers!
Either can be customer installed in under two hours.
The Lindsey Racing intercoolers require only "minor" modifications to your car. You will be required to remove one factory-mounting tab, which can be done in mere seconds. Everything else remains completely stock on your 951. Other viable intercoolers options available for the 951 require you to heavily modify your front uni-body structure. Modifications more reserved for dedicated track cars. Not the Lindsey Racing unit. Ours installs easily in under two hours and can be done by anyone with basic mechanical knowledge and a few tools.
Recommended for stock 2.5 liter engines to engines using air cleaner upgrades, performance chip sets, Lindsey Boost Enhancer, exhaust modifications or running higher then stock boost levels.
Recommended for 2.5 to 3.3 liter engines using Mass Air Flow Systems, Dual Port Wastegates, larger turbos, ported heads, cams and larger exhaust.
Test data from July 1, 2000 comparing pressure drop and temperature drop between stock intercooler vs. the Lindsey Racing Stage I and Stage II intercooler modification. Pressure drop is measured in psi and temperature drop is in Fahrenheit. Pressure drop was measured using a Dwyer Instruments Magnehelic Differential Pressure Gage model 102022-00 (range 0-2 psi). Temperature drop was measured with the Lindsey Racing Digital LED Intercooler Temperature Gauge. Tests were performed on a 1988 Porsche 944 Turbo S (952). Car is stock except for Autothority Stage II chip set. Pressure drops were measured at 6,000 rpm in 3rd gear under full boost. Temperature drops were measured after run up from 2,000 rpm in 2nd gear at 4,000 in 4th gear under full boost.
Intercooler Swap Instructions complete with Pictures