IP Full Load Adjustment Procedure for the MW and M pumps
IP Full Load Adjustment Procedure for the MW and M pumps
(02-28-2010, 07:30 PM)Jettmar IP maxed out with the stock 5.5s is fine.The stock pump can only deliver 175hp, the 50-trim T3 your engine can support that without being stressed.
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Are you implying that the small stock turbo (set to max psi or thereabouts) could make big number power?
Quote:Seems these Finns are putting these big turbos on because the extra boost is needed.They are making 100-250% more than stock power levels, the 5.5mm injection pump can only supply 20% more than stock.
Quote:I'm more concerned with low end grunt. I know that is generally not a turbos forte. But my trade off would be more towards good low end and give up some top end.Then you want to keep the stock turbo. Changing to a larger turbo will move the torque curve up in RPM because of its slower response.
Quote:I know of cases where the turbo or turbos are put under the back of the car to help keep under hood temps down.No, those are just cheap power-adder kits for non-turbo engines. They are very inefficient.
Quote:Plus an intercooler isn't needed because the long run to the intake is effectively the "intercooler".Same with the exhaust going to them, thats why they don't work well. The turbo should be as close to the exhaust ports as possible to harness as much heat, velocity and pressure/momentum energy as possible. With rear turbos you're just working with backpressure to drive it.
Quote:I would prefer to leave the stock turbo intact and add another smallish one to add that additional boost that seems to me would be needed to keep up with a maxed out 603 pump.Sequential turbos are extremely difficult to make work properly without computer control. If you want response, you should look into a GT2359V or GT2559V VNT turbo.
(02-28-2010, 07:30 PM)Jettmar IP maxed out with the stock 5.5s is fine.The stock pump can only deliver 175hp, the 50-trim T3 your engine can support that without being stressed.
...
Are you implying that the small stock turbo (set to max psi or thereabouts) could make big number power?
Quote:Seems these Finns are putting these big turbos on because the extra boost is needed.They are making 100-250% more than stock power levels, the 5.5mm injection pump can only supply 20% more than stock.
Quote:I'm more concerned with low end grunt. I know that is generally not a turbos forte. But my trade off would be more towards good low end and give up some top end.Then you want to keep the stock turbo. Changing to a larger turbo will move the torque curve up in RPM because of its slower response.
Quote:I know of cases where the turbo or turbos are put under the back of the car to help keep under hood temps down.No, those are just cheap power-adder kits for non-turbo engines. They are very inefficient.
Quote:Plus an intercooler isn't needed because the long run to the intake is effectively the "intercooler".Same with the exhaust going to them, thats why they don't work well. The turbo should be as close to the exhaust ports as possible to harness as much heat, velocity and pressure/momentum energy as possible. With rear turbos you're just working with backpressure to drive it.
Quote:I would prefer to leave the stock turbo intact and add another smallish one to add that additional boost that seems to me would be needed to keep up with a maxed out 603 pump.Sequential turbos are extremely difficult to make work properly without computer control. If you want response, you should look into a GT2359V or GT2559V VNT turbo.