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VQStryker · 07-23-2011, 05:31 PM

IMO and something I have noticed is that Japanese imports seem to make there most up top rather then low-low mid and is why there engines tend to rev high. On the other hand domestic cars, especially mustangs, rely more on there high low end tourqe and having a low rev....just something I think

forgot to mention that they have a longer stroke to create the high low end tq numbers but then peaks, drops. Of course modifications such as cams, valves, springs rods, and maybe some others will allow them to adjust the cars tq/hp at whatever rpm through tuneing. What this means is that the low end tq monster just became a car that no longer revs at 6-6.5k but now is safely at 7.5 maybe 8k with better high end tq......IMO

As for the MS3/Audi, you are all very much correct. The A/R would have ALOT to do with that. Higher the A/R is on a turbo the better your top end and seeing as the stock MS3/Audi would have to (in stock form) pass certain criteria, they probably gave them a smaller turbo with a smaller A/R.

Reason for it being better up top and being able to create more power in the long run is do the inducer side being larger and pushing it through the small exducer side creating alot more pressure then the smaller A/R turbos and being a larger A/R means it takes a little longer to build up rotational speed.
It also depends on the difference between the inducer and exducer sides of the turbo. Like with GTM TT kits (GT28RS .64 A/R and GT28RS .86 A/R) the smaller turbo will creat its max power faster and flatten out faster too where the larger turbo will take a bit longer but will not flatten out as quickly along with making more tq/hp.

sorry about the long post I couldnt stop talking

here is a VERY informative link for you guys, I just found it

TurboByGarrett.com - Turbo Tech102

07-23-2011, 05:31 PM	#12 (permalink)
VQStryker Track Member Join Date: Jul 2011 Location: Texas Age: 36 Posts: 659 Drives: :( Rep Power: 15	IMO and something I have noticed is that Japanese imports seem to make there most up top rather then low-low mid and is why there engines tend to rev high. On the other hand domestic cars, especially mustangs, rely more on there high low end tourqe and having a low rev....just something I think forgot to mention that they have a longer stroke to create the high low end tq numbers but then peaks, drops. Of course modifications such as cams, valves, springs rods, and maybe some others will allow them to adjust the cars tq/hp at whatever rpm through tuneing. What this means is that the low end tq monster just became a car that no longer revs at 6-6.5k but now is safely at 7.5 maybe 8k with better high end tq......IMO As for the MS3/Audi, you are all very much correct. The A/R would have ALOT to do with that. Higher the A/R is on a turbo the better your top end and seeing as the stock MS3/Audi would have to (in stock form) pass certain criteria, they probably gave them a smaller turbo with a smaller A/R. Reason for it being better up top and being able to create more power in the long run is do the inducer side being larger and pushing it through the small exducer side creating alot more pressure then the smaller A/R turbos and being a larger A/R means it takes a little longer to build up rotational speed. It also depends on the difference between the inducer and exducer sides of the turbo. Like with GTM TT kits (GT28RS .64 A/R and GT28RS .86 A/R) the smaller turbo will creat its max power faster and flatten out faster too where the larger turbo will take a bit longer but will not flatten out as quickly along with making more tq/hp. sorry about the long post I couldnt stop talking here is a VERY informative link for you guys, I just found it TurboByGarrett.com - Turbo Tech102 Last edited by VQStryker; 07-23-2011 at 05:58 PM.