Pontiac Solstice Forum - View Single Post - Interesting info on our stock KD04 turbo

A free-er flowing Intercooler will lower the boost pressure that the turbo must put out to get the desired boost at the intake manifold. The higher the desired boost and CFM, the worse this pressure difference gets on the stock IC. Our stock intercoolers are designed for 260hp. A better IC will prolong turbo life and lower the air temp going into the intercooler since it puts the turbo in a more efficient place on its map (due to the lower output pressure). An IC upgrade is strongly recommended by Lyndon Wester with his tune.

Never the less, the stock turbo won't put out 23psi at 7000rpm on a 2litre engine, its compressor wheel is just is too small to feed that much CFM.

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Dave at www.DEJONPOWERHOUSE.com
Currently running 311 rear wheel hp with 16g kit at 25psi
Stocking Dealer for HP Tuners VCM Suites and Wester's tune
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NASSOA
Founding Member #6
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	DEJON-Dave Supporting Tuner Join Date: Apr 2007	A free-er flowing Intercooler will lower the boost pressure that the turbo must put out to get the desired boost at the intake manifold. The higher the desired boost and CFM, the worse this pressure difference gets on the stock IC. Our stock intercoolers are designed for 260hp. A better IC will prolong turbo life and lower the air temp going into the intercooler since it puts the turbo in a more efficient place on its map (due to the lower output pressure). An IC upgrade is strongly recommended by Lyndon Wester with his tune. Never the less, the stock turbo won't put out 23psi at 7000rpm on a 2litre engine, its compressor wheel is just is too small to feed that much CFM. __________________ Dave at www.DEJONPOWERHOUSE.com Currently running 311 rear wheel hp with 16g kit at 25psi Stocking Dealer for HP Tuners VCM Suites and Wester's tune ~~~~~~~~~~~~~~~~~~~ NASSOA Founding Member #6 ~~~~~~~~~~~~~~~~~~~