vortech FAQ: read this before asking vortech questions
#2141
New Member
iTrader: (1)
There's always this option: https://my350z.com/forum/tuning/5921...ing-uprev.html
This extends the MAF curve for about $0.40 using uprev. Should be good for 500whp+, depending on how much he decides to attenuate the signal. The stock MAF is perfectly capable of reading big airflow, it's the ECU that's limited to 5.1v input. This squeezes more of the MAF curve into that voltage range.
I don't know what the upper limit is on the Hitachi sensor, but it's well known in domestic circles that it reads airflow to at least 6V. Maybe someday my curiosity will get the better of me and I'll hook a leafblower up to it
This extends the MAF curve for about $0.40 using uprev. Should be good for 500whp+, depending on how much he decides to attenuate the signal. The stock MAF is perfectly capable of reading big airflow, it's the ECU that's limited to 5.1v input. This squeezes more of the MAF curve into that voltage range.
I don't know what the upper limit is on the Hitachi sensor, but it's well known in domestic circles that it reads airflow to at least 6V. Maybe someday my curiosity will get the better of me and I'll hook a leafblower up to it
Last edited by kilogram; 04-18-2014 at 02:08 PM.
#2143
Registered User
iTrader: (2)
There's always this option: https://my350z.com/forum/tuning/5921...ing-uprev.html
This extends the MAF curve for about $0.40 using uprev. Should be good for 500whp+, depending on how much he decides to attenuate the signal. The stock MAF is perfectly capable of reading big airflow, it's the ECU that's limited to 5.1v input. This squeezes more of the MAF curve into that voltage range.
I don't know what the upper limit is on the Hitachi sensor, but it's well known in domestic circles that it reads airflow to at least 6V. Maybe someday my curiosity will get the better of me and I'll hook a leafblower up to it
This extends the MAF curve for about $0.40 using uprev. Should be good for 500whp+, depending on how much he decides to attenuate the signal. The stock MAF is perfectly capable of reading big airflow, it's the ECU that's limited to 5.1v input. This squeezes more of the MAF curve into that voltage range.
I don't know what the upper limit is on the Hitachi sensor, but it's well known in domestic circles that it reads airflow to at least 6V. Maybe someday my curiosity will get the better of me and I'll hook a leafblower up to it
this is really interesting stuff, but for all that trouble, why wouldn't you just put the MAFS in a 3.5" pipe? Done.
#2146
New Member
iTrader: (1)
If I were just in the beginning stages of tuning the car, I'd definitely do the resistors since I'd have to tune it anyway. This was one of the easiest things I've done to the car so far.
#2147
New Member
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I swapped a vq into my 240. My fuel system is pretty simple...
Walbro to fuel filter to fuel rails to AFPR back to tank all on 6an lines.
I have the base fuel pressure set via the AFPR and has no vacuum lines attached cause na vq's run a static fuel pressure... 52psi iirc.
Well when I hook up the Vortech, should I have a have a vacuum line attached to the fpr so it raises fuel pressure with boost?
If so, is it 52psi I set it at with or without the vacuum line connected at idle?
Walbro to fuel filter to fuel rails to AFPR back to tank all on 6an lines.
I have the base fuel pressure set via the AFPR and has no vacuum lines attached cause na vq's run a static fuel pressure... 52psi iirc.
Well when I hook up the Vortech, should I have a have a vacuum line attached to the fpr so it raises fuel pressure with boost?
If so, is it 52psi I set it at with or without the vacuum line connected at idle?
Last edited by Guilty1s; 05-08-2014 at 01:20 PM.
#2148
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Location: Iceland
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Bogging ?
I just had installed a used vortech kit. 350z 2005 vq35de
On high rpm everything seems to be working fine, the boost holds and car moves strong.
The problem is that when driving slow and in low rpm car bogs heavily under full throttle from 2000-3800rpm.
Seems to run way way rich in fuel and smokes black.
This happens immediatly afther the bov closes on low rpm.
Is there a way to program the vortech boost computer manually, or are there revised maps available?
The car is in iceland. it does not show a CEL.
sidenote:
I have researched this by my extent on google and on the forum, and there are no answers other than i need a tune.
but should a tune be necessary to get the car to a useable state for the standard 3.33 pulley kit on a standard 350z.
Osiris is very expensive when it would be in my hands. about 1400$ because of crazy import laws.
On high rpm everything seems to be working fine, the boost holds and car moves strong.
The problem is that when driving slow and in low rpm car bogs heavily under full throttle from 2000-3800rpm.
Seems to run way way rich in fuel and smokes black.
This happens immediatly afther the bov closes on low rpm.
Is there a way to program the vortech boost computer manually, or are there revised maps available?
The car is in iceland. it does not show a CEL.
sidenote:
I have researched this by my extent on google and on the forum, and there are no answers other than i need a tune.
but should a tune be necessary to get the car to a useable state for the standard 3.33 pulley kit on a standard 350z.
Osiris is very expensive when it would be in my hands. about 1400$ because of crazy import laws.
Last edited by lethal3; 05-13-2014 at 03:06 AM.
#2149
New Member
iTrader: (79)
If your kit has the split second box, then your you can tune that...you may want to PM OldManZ350, he's very familair with the SS Box...
I just had installed a used vortech kit. 350z 2005 vq35de
On high rpm everything seems to be working fine, the boost holds and car moves strong.
The problem is that when driving slow and in low rpm car bogs heavily under full throttle from 2000-3800rpm.
Seems to run way way rich in fuel and smokes black.
This happens immediatly afther the bov closes on low rpm.
Is there a way to program the vortech boost computer manually, or are there revised maps available?
The car is in iceland. it does not show a CEL.
sidenote:
I have researched this by my extent on google and on the forum, and there are no answers other than i need a tune.
but should a tune be necessary to get the car to a useable state for the standard 3.33 pulley kit on a standard 350z.
Osiris is very expensive when it would be in my hands. about 1400$ because of crazy import laws.
On high rpm everything seems to be working fine, the boost holds and car moves strong.
The problem is that when driving slow and in low rpm car bogs heavily under full throttle from 2000-3800rpm.
Seems to run way way rich in fuel and smokes black.
This happens immediatly afther the bov closes on low rpm.
Is there a way to program the vortech boost computer manually, or are there revised maps available?
The car is in iceland. it does not show a CEL.
sidenote:
I have researched this by my extent on google and on the forum, and there are no answers other than i need a tune.
but should a tune be necessary to get the car to a useable state for the standard 3.33 pulley kit on a standard 350z.
Osiris is very expensive when it would be in my hands. about 1400$ because of crazy import laws.
#2150
Registered User
Can the NPT side tap from this oil filter sandwich plate (for an oil cooler) be used to supply oil to the vortech SC?
http://www.mishimoto.com/oil-sandwic...20-silver.html
http://www.mishimoto.com/oil-sandwic...20-silver.html
#2151
New Member
iTrader: (11)
of course
Can the NPT side tap from this oil filter sandwich plate (for an oil cooler) be used to supply oil to the vortech SC?
http://www.mishimoto.com/oil-sandwic...20-silver.html
http://www.mishimoto.com/oil-sandwic...20-silver.html
#2152
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seems that the EU ecu and the USA ecu are different in fuel mapping so my
EU z33 got flooded with fuel on wot at 1-4psi.
#2155
New Member
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I am installing the v3 sci kit right now on my 350z but I ran into one issue I need clarification on. I bought my own fuel injectors and fuel pump so i dont have the fmu, my question is, what do I do with the 5/32 hose that hooks up to the bypass valve? It has a locknut, two washers and bolt included with it? Where do I run this?
Last edited by crd00; 06-27-2014 at 02:28 PM.