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S5TII engine & GT3574@18.5psi

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Old Nov 20, 2008 | 09:13 AM
  #1  
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S5TII engine & GT3574@18.5psi

Here's my sheet

Boost comes on late and lazy, turbine has eaten a few apex seals
This run was also the run where a fuel pressure issue reared its head, that why the AFR goes lean at the top. The dyno was also reading a little higher in general due to a couple small exhaust leaks and the dyno's sensor beign in the tailpipe...

@15psi it made 350
@8 psi it made 280

Not bad for unfinished tune and ****-acular boost response. Also, I could only rev to about 6000,6200RPM due to the E6X picking up noise above that.

Dyno:
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Old Nov 21, 2008 | 06:00 PM
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dude that's awesome! i haven't dyno'd my 35R yet, but at 10psi and a rough tune it pulls nice. when does the boost come in? mine comes in between 3k-4k depending on how much boost, i am running an hks manifold and the WG is recirculated so my response could be better as well.

i'm glad i got the microtech, i have heard about pick up noise complaints from quite a few people and i just didn't want to deal with that. stand alones aren't cheap.
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Old Nov 22, 2008 | 09:09 AM
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Well the boost is shown on the graph. But don't take my results as good at all, they're terrible. Before the turbo ate any apex seals I would get 10psi by 3500rpm, 15+ by ~4000. Now its nowhere near that after having a couple chips out of the turbine.....but check the graph, boost is in green and mapped on the right hand scale.

Also:
boost = green
AFR = black
Both read on the right hand scale

Power = red
Torque = blue
Both read on the left hand scale
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Old Nov 26, 2008 | 09:00 AM
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From: St. Thomas
is that on a stock S5 engine?
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Old Nov 26, 2008 | 09:22 AM
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Nearly stock ports, 2mm earlier opening on the exhaust, 2mm later closing on the intakes.

Otherwise completely stock keg/manifolds, 2peice OEM apex seals.

Turbo fuel and EMS, not stock
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Old Nov 27, 2008 | 10:44 AM
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those are pretty decent #'s, but you definitely need to work on your tune some more, gt35r should make more than 400whp easily at 18psi

i made 313whp 289ft-lbs with my S5, it was modified in japan,im pretty sure its stock ports, it has a big garrett jdm hybrid, it was with a crappy Turboxs MBC, with basically just s spike to 15psi and a crappy tune on a SAFC Neo, i'm definately goin standalone over the winter
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Old Nov 27, 2008 | 11:00 AM
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Yeah, like I said the power is down due to the boost issue from the damaged turbo. Look at the graph, it doesn't hit target boost until the end of the run! LOL
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Old Dec 1, 2008 | 11:42 AM
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Originally Posted by classicauto
Here's my sheet

Boost comes on late and lazy, turbine has eaten a few apex seals
This run was also the run where a fuel pressure issue reared its head, that why the AFR goes lean at the top. The dyno was also reading a little higher in general due to a couple small exhaust leaks and the dyno's sensor beign in the tailpipe...

@15psi it made 350
@8 psi it made 280

Not bad for unfinished tune and ****-acular boost response. Also, I could only rev to about 6000,6200RPM due to the E6X picking up noise above that.
Just to clarify - only the AFR readings were high - the other numbers are fine.
Also - ran another car on Sat and had a nearly identical fuel press problem - we're thinking a collapsed fuel filter? Might be something to look at.

Last edited by DynoDragon; Dec 1, 2008 at 11:44 AM. Reason: remove dyno sheet image
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Old Dec 2, 2008 | 07:52 AM
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Yeah, I haven't had it apart yet, but thats what I'm thinking. The filter's a year old with 20,000kms on it. And it seemed to just become a problem after 2 hours of dyno runs

I'll post my results in my thread though. I'm sure its something simple.
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