Need help understanding this guys. Someone told me it reduces backpressure plus more lag . What about top end TQ ect!!!!!


Before


After One less blade Cheers guys Lee.

 

I would imagine 1 less blade would make for more lag and less power up top but Im not 100% on that one.

Boost might creep a tad more with less back pressure as well if you have any issues with it in the first place

 

Number of blades is an engineering thing, and it doesnt have a huge effect on performance. Blade length and contour are the primary factors. The larger wheel will induce more lag and drop torque, but will allow for better top end horsepower (provided the compressor hasnt peaked out).

 

Less blades will make spooler slower, however it should increase power in the higher rpms, as you have decreased the backpressure.

 

Comp side has gone from a 18g to a 20g, backpressure means more Torque! .So im going to gain the top end that the greddy kit lacks,but will the bigger comp side give me the backpressure back ??.Im thinking that the whole turbo will just max out at a lower psi then the t518z ???.
T620z my plan is to break the 400hp mark with the greddy kit with this hybrid waiting on clutch to be fitted and tune cheers Lee.

 

Backpressure doesnt mean torque. Torque on a turbocharged car is directly related to spool time. Quicker spool means more torque. The large turbine will have more inertia, making it slower to spin up, but it will also flow more air. The better airflow will allow the larger compressor to be used, which means more power.

Think of a motor simply as an air pump. The more air you can move through it at a given rate will mean more power. Regarding maximum boost (psi), its simply a matter of pressure and not an actual measurement of the airflow.

 

I suppose ill just have to wait and see how much air the rest of the greedy kit can flow. cheers Scorpion .