Power gains of 10.5t over 9.8t

[M333CPP]

As above really guys, my 8 gsr is soon going in to be tuned, have 272 cams, walbro intake boost controller, 3" decat full system and all other supporting mods. Just wondering if the 10.5t hotside will get me much more power over the 9.8t thats currently on it?

 

[Satoshi-5GSR]

YES is the simple answer, but at the cost of few extra RPM's of lag.

The easiest way to tell people the differences in turbine housings is this: The larger the housing the greater the capacity for peak power, the smaller the housing the more responsive but at a cost of peak power due to choking. The 9.8 will give you the best tuned driveability on a stock set up, but with the addition of cams I see no real reason to not bolt on the 10.5 IMO.

 

[M333CPP]

Cool, any ideas of the actual extra power I should see?

 

[Satoshi-5GSR]

Now that's the question, it would depend on boost threshold, injector duty, and fuel used. Who's doing the mapping?

 

[M333CPP]

Taking it to Hayes Dynotech in London pal, I already have the 10.5 hotside was just wondering if its worth while doing and roughly what extra it will make with it

 

[M333CPP]

Made 404 so happy with that !

 

[andyw08]

My gsr has the same mods and is going for rolling road in a couple of weeks....im hopeing that my printout starts with a 4! Ha ha