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AMS 373whp & 388whp -EVO X

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Old Mar 25, 2008 | 02:30 PM
  #1  
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AMS 373whp & 388whp -EVO X

I'm really impressed by the 4B11, this is very good power considering the limited modifications! With the AEM FIC fuel controller we're able to dial in the fuel curve and run the car at a more decent A/F ratio. For this round of tests we added a little bit of race gas to the mix and leaned it out a little more. Reducing the MAS sensor reading (leaning it out) also reduced the load, tricking the ECU into thinking we're running less boost and it runs at higher timing values.

Cranking the boost controller in give us 373whp on the first run!

The next run gets one more turn on the boost controller and a tad bit leaner on the A/F's.

I can't wait to be able to have control over the timing tables and cam timing. With the addition of cams and some other bolt-ons goodies we'll be seeing well over 400whp soon! I'm really not surprised as the head looks so much better than the 4G63.

Here is what I think is better on the 4B11 than the 4G63

Bore to Stroke ratio
Compression Ratio
Intake Port
Valve job & seat/bowl area
Intake cam profile

For reference the turbo itself looks very similar to the VIII or IX turbo. I took measurements of the wheels and besides rotation (not reverse scroll) the wheels measure out almost identical.




Last edited by Martin@AMS; Mar 25, 2008 at 02:31 PM. Reason: spelling
Old Mar 25, 2008 | 02:33 PM
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Wow! how much boost on the last run?
Old Mar 25, 2008 | 02:34 PM
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the X is definitely impressing me more and more.
nice work Martin, can't wait till you can get into the ecu and get those other tables dialed in
Old Mar 25, 2008 | 02:38 PM
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Mod List???? Boost Levels??? How much gas did you mix???? What kind of gas????????
Old Mar 25, 2008 | 02:58 PM
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Mod List

AMS Twin tip exhuast
AMS Test Pipe
AMS O2 hsg/downpipe
AMS MAS Cold Air intake pipe
AMS Hot side IC pipe
AMS Intercooler
Tial Recirc BOV
AEM FIC
AMS Manual Boost controller
93 octane/C16 Mix
Old Mar 25, 2008 | 03:00 PM
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How much boost?
Old Mar 25, 2008 | 03:14 PM
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How about a video of the dyno runs?
Old Mar 25, 2008 | 03:18 PM
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Originally Posted by BoostedEvoVIII
How much boost?
interested as well
Old Mar 25, 2008 | 03:19 PM
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Meth and more boost
Old Mar 25, 2008 | 03:22 PM
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God damn!Nice numbers!
Old Mar 25, 2008 | 03:23 PM
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Sorry,

28psi dropping to 19-20psi at redline on the first run
30-31psi dropping to 20-21psi at redline on the second run
Old Mar 25, 2008 | 03:26 PM
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Originally Posted by Martin@AMS
Sorry,

28psi dropping to 19-20psi at redline on the first run
30-31psi dropping to 20-21psi at redline on the second run

Old Mar 25, 2008 | 03:30 PM
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Originally Posted by Martin@AMS
Sorry,


30-31psi dropping to 20-21psi at redline on the second run
Damn! Is this turbo runing out of flow at those levels and maxed out?
Old Mar 25, 2008 | 04:10 PM
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Stock engine running 31psi? How strong is this damn thing?

Last edited by No.9; Mar 25, 2008 at 04:12 PM.
Old Mar 25, 2008 | 04:16 PM
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31psi on stock head bolts!!!!! something us evo 8&9 owners didnt do very often


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