Page 1 of 2
Max boost
Posted:
Tue, 27 Feb 2018 1:35 +0000
by Silverfox1111
Gday all
What is the maximum boost people are seeing on their 'luxs?
The most I've seen, via a scanguage, is 14lbs. On bookface their are some claiming 18 to 20lbs on a standard motor.
Silverfox
Re: Max boost
Posted:
Tue, 27 Feb 2018 1:52 +0000
by HK1837
6.5psi on my V6! I wonder how long a standard diesel would live for running 20psi?
Re: Max boost
Posted:
Tue, 27 Feb 2018 2:40 +0000
by Tyler1993
21 psi on my diesel.
Only engine mods are egr restrictor and steinbaur chip
Sent from my iPhone using Tapatalk
Re: Max boost
Posted:
Tue, 27 Feb 2018 2:56 +0000
by Sparksy
Stock I believe 14-16 psi is the most it can go.
Re: Max boost
Posted:
Tue, 27 Feb 2018 8:16 +0000
by rory18
I run 35-36 psi in my ute
Max boost
Posted:
Wed, 28 Feb 2018 6:18 +0000
by Tyler1993
Does anyone one know if my high boost is because of something faulty.
Like I said only mods are steinbaur and egr plate, to my knowledge neither of these should increase boost, but not 100% on that one.
TOYZ said he has seen boost that high with a faulty stepper motor, but I have had no engine light or limp mode?
Is 20psi bad and should I be looking for something faulty?
Sent from my iPhone using Tapatalk
Re: Max boost
Posted:
Wed, 28 Feb 2018 6:29 +0000
by sa_lux
G'Day Rory
rory18 wrote:I run 35-36 psi in my ute
Are you talking tyre pressure here ?
Re: Max boost
Posted:
Wed, 28 Feb 2018 8:02 +0000
by Gipsy
Depends how/where it is measured... Some you need to deduct atmospheric pressure. if this is the case 36 psi less 1 ATM =around 12-13psi boost. Boost is anything above atmospheric pressure. Does this make sense?
Re: Max boost
Posted:
Wed, 28 Feb 2018 8:16 +0000
by Gipsy
Tyler1993 wrote:21 psi on my diesel.
Only engine mods are egr restrictor and steinbaur chip
Sent from my iPhone using Tapatalk
Tyler, it is possible 20psi max is because your egr plate/restrictor reduces exhaust bleed through the egr thus increasing what you see on the boost gauge. Could be faulty stepper leaving the vanes in the wrong position though? Engine light would normally indicate if there is a problem though.
Edit...oops maybe I could have explained that better... Egr plate increases exhaust gas volume/pressure in the manifold which may spin the turbo up better thus increasing boost. Not sure about steinbauer though whether it increases boost by fiddling the sensors.
Edit edit.. Somewhere boxhead talked about the variability of boost measurements depending on where you tap the gauge in.
Re: Max boost
Posted:
Wed, 28 Feb 2018 9:04 +0000
by TOYZX
The egr plate will help spin it up faster but the computer should still dictate what max boost it unless the chip is altering it. Shouldn't be that high tho if measured at the correct spot.
Sent from my SM-G955F using Tapatalk
Re: Max boost
Posted:
Wed, 28 Feb 2018 9:16 +0000
by Gipsy
Agreed
Re: Max boost
Posted:
Wed, 28 Feb 2018 10:50 +0000
by Sparksy
sa_lux wrote:G'Day Rory
rory18 wrote:I run 35-36 psi in my ute
Are you talking tyre pressure here ?
If this is the bloke I'm thinking of on modified, he's not talking tyre pressure at all.
Max boost
Posted:
Wed, 28 Feb 2018 11:03 +0000
by Tyler1993
I have tapped into the boost line where it comes out of the manifold, just before the map filter.
So really the reading should be the same as what the factory sensor is sensing.
I’m just starting to get abit worried now that there could be something wrong and sure enough it will raise its head when I’m out in the middle of nowhere
Sorry another engine mod is a modified exhaust. Stock dump pipe with no cat that joins to a 3 inch to the back with a hotdog muffler
Sent from my iPhone using Tapatalk
Re: Max boost
Posted:
Wed, 28 Feb 2018 12:14 +0000
by TOYZX
What happens when you pull the chip out? Id be worried its running lean with that much air getting shoved in there!
Sent from my SM-G955F using Tapatalk
Max boost
Posted:
Wed, 28 Feb 2018 12:32 +0000
by Tyler1993
No change in boost with the chip unplugged, that was my first thought.
Only difference with it out is power loss and slightly lower EGTs, boost remains the same
Have also tried a different boost gauge caus I thought maybe the redarc one was off.
But both gauges read the exact same
Re: Max boost
Posted:
Wed, 28 Feb 2018 12:45 +0000
by Silverfox1111
Are we all talking about the same model of hilux?
Mine is a 2017.
Silverfox
Re: Max boost
Posted:
Wed, 28 Feb 2018 12:50 +0000
by sa_lux
G'Day Sparkys
Sparksy wrote:he's not talking tyre pressure at all.
I didnt think he was, just a very poorly delivered joke on my part
Re: Max boost
Posted:
Wed, 28 Feb 2018 1:12 +0000
by Gipsy
Check out boxhead's views on where to tap in:
http://www.newhilux.net/forum/viewtopic ... 3&start=20by boxhead55 on Sat, 01 Nov 2014 10:56 +0000
Yep but I would not t into that as it will fudge the map sensor. Not by much but data does not lie. I would tap a new hole somewhere just for the boost guage.
boxhead55 on Sun, 02 Nov 2014 3:17 +0000
I have seen heaps taped into the steal pipe from the turbo to the intercooler. Easy to take off and drill I guess. 4 10mm bolts and a hose clamp.
Also if you tap into the map hose you will get fluctuations in the reading due to the throttle plate opening and closing as it needs to. By putting it in the pipe you will get the exact boot reading uneffected by the egr and throttle plate
User avatar
boxhead55
Re: Max boost
Posted:
Wed, 28 Feb 2018 1:26 +0000
by Gipsy
Tyler, your exhaust would have some effect also because the gas flow is improved.
Re: Max boost
Posted:
Wed, 28 Feb 2018 2:20 +0000
by Tyler1993
Thanks for that gipsy!
I might try to tap into a different place and see if it affects the readings.
If the readings are the same do you think it’s something I should worry about?
And no sorry silver fox mine is 2010
Sent from my iPhone using Tapatalk