AMS Tests: Jared's 2.3RR Powered EVO 9 GT35R to 850R!!!
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AMS Tests: Jared's 2.3RR Powered EVO 9 GT35R to 850R!!!
Recently we swapped out the GT35R on Jared's car for an 850R and did not change anything else at all. These runs are both done on 100% pump 93oct with no additional injection systems.
The turbo spools about 100-150 RPM slower and made a decent improvement on pump gas only. The difference in the power up top is very exciting as this will grow exponentially as the boost level is raised and the full capability of this 700+ whp turbo is realized on race gas.
The car responded very well to the turbo, and this was mimicked by the changes it would accept in timing and fueling, presumably due to the lower back pressure levels achieved.
Quick modlist
* -AMS 2.3 RR
* -AMS Race Head
* -AMS 850R Turbo Kit
* -EXEDY Twin Metallic Clutch
* -AMS VSR
* -AMS FMIC
* -AMS TBE
* -AEM EMS
* -JRZ Pro Series Coilovers
The turbo spools about 100-150 RPM slower and made a decent improvement on pump gas only. The difference in the power up top is very exciting as this will grow exponentially as the boost level is raised and the full capability of this 700+ whp turbo is realized on race gas.
The car responded very well to the turbo, and this was mimicked by the changes it would accept in timing and fueling, presumably due to the lower back pressure levels achieved.
Quick modlist
* -AMS 2.3 RR
* -AMS Race Head
* -AMS 850R Turbo Kit
* -EXEDY Twin Metallic Clutch
* -AMS VSR
* -AMS FMIC
* -AMS TBE
* -AEM EMS
* -JRZ Pro Series Coilovers
![](http://amsteam.net/files/3/JD-23rr-35rvs850r-std.jpg)
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The difference in starting RPMS isnt the cause of much difference in the spool times.
Any difference is equalized by 4k rpms for sure.
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