ER34 GTT and Siemens Deka IV 60lb

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DistSynth
 

Posts: 5
Joined: Tue Jul 01, 2014 12:50 am

ER34 GTT and Siemens Deka IV 60lb

Post by DistSynth »

Hi everyone!

I'am stuck with my tune and need help :(

Specs:
RB25DET NEO
Holset HX30 turbo with tial wastegate (wented to air)
Z32 MAF
Greddy like intake manifold
HKS SSQV
Aeromotive fuel regulator
Tomei fuel pump
Siemens Deka IV 60lb/630cc injectors FI114961
GTR intercooler
Innovate LC-2 wideband oxygen sensor (connected to ECU like narrowband)

In my tune:
K - 581 (i set it few yaers ago, before injectors was installed)
TID - 54431
Injection latency - 1000 (but in injectors spec it must be 640us)
O2 feedback is off

If i set latency to 640us AFR is about 17-18.
On idle AFR can be between 14 and 16. Car can stall after 0.3 Bar of boost (if boost will be 0.7 Bar car stall 100%), but before i install injectors all things was ok.
Matt
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Re: ER34 GTT and Siemens Deka IV 60lb

Post by Matt »

I would lower the latency for those injectors down to about 700uS... as that seems rather high for that size injector

What is cruise AFR like with those settings?
DistSynth
 

Posts: 5
Joined: Tue Jul 01, 2014 12:50 am

Re: ER34 GTT and Siemens Deka IV 60lb

Post by DistSynth »

AFR on cruise is about 13.5 — 14.
I think it's too rich.
Matt
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Joined: Sun Jan 29, 2006 1:45 am
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Re: ER34 GTT and Siemens Deka IV 60lb

Post by Matt »

You may need to increase TID further to make it run better

With NEO engines there is no Min TP table, so sometimes I increase the lower end of the VQ map to add more fuel around idle
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