EBC accurate enough to stop 1psi spike??

[~SlideWays~]

My Trueno 4agte was tuned to 20psi with a TD05-16G.

Problem I have is that the MAP sensor in my LInk Plus G1 maxes out at 22psi, this wasn't an issue on the dyno but in real world conditions I keep hitting boost cut in 1st and 2nd.

The boost control is manual via a air pressure regulator (NOT a bleed valve) plumbed into top and bottom of the wastegate diaphragm. This worked very well with the old turbo but now with the much faster spooling TD05 it appears to be spiking.

So two options I have are to find a Electronic Boost Controller that is capable of controlling boost with less than 2psi of 'headroom' or to upgrade the internal map sensor for a bit more headroom.

I haven't played with an EBC before so don't know if I would be wasting my time. Previously I had the Link Controlling boost but it was hopeless, which is why I moved to the manual set up.

So, how good are EBC's and what works?

[Lith]

Hmm - forgive me if I am missing something, or if I am a rough guy (not to mention not actually answering your question haha).... but if you have a Link+ (I've not played with these old relics before so could be making an incorrect assumption) shouldn't you be able to upgrade to a 3bar MAP sensor? And if so, wouldn't that probably be cheaper, easier and also give you more headroom to make for more happy fun times in future than spending the money and time installing and tuning a new boost controller?

Just a thought Alternatively, if you have an external wastegate sometimes changing to spring(s) closer to your target pressure is an effective way of stabilising boost control.

[~SlideWays~]

Hmm - forgive me if I am missing something, or if I am a rough guy (not to mention not actually answering your question haha).... but if you have a Link+ (I've not played with these old relics before so could be making an incorrect assumption) shouldn't you be able to upgrade to a 3bar MAP sensor? And if so, wouldn't that probably be cheaper, easier and also give you more headroom to make for more happy fun times in future than spending the money and time installing and tuning a new boost controller?

Just a thought Alternatively, if you have an external wastegate sometimes changing to spring(s) closer to your target pressure is an effective way of stabilising boost control.

Hey, yep that's option 'two' above

Lol yes it's not the newest it's been in there probably 7 years now. And yes since it's a plus, the map sensor can be upgraded. The firmware is the latest before the G2 came along so it does plenty enough for what is a pretty uncomplicated engine. Only reason I would upgrade would be for some of the flex fuel voodoo

Also I installed a Tial 1 bar spring in prep of the move to 20psi, so it's not too far off but could change again.

I asked STM a while ago about upgrading the map sensor to a 3 bar a while ago and it was around $280 installed so about half the price of a new ebc. In saying that it would be nice to have boost settings on a switch.

[BlakeNZ]

just because your MAP sensor only reads to 22psi, doesn't mean that you have to hit boost cut at 22psi. So you could remove boost cut, so a one or two psi spike won't stop the fun anymore.
However, I'd definitely look at a 3 bar upgrade. then look for a 2nd hand quality boost controller. So you can have both a 3 bar MAP sensor, and a EBC, for around the price of a new EBC.
http://www.trademe.co.nz/motors/car-par ... 163365.htm
http://www.trademe.co.nz/motors/car-par ... 030094.htm
http://www.trademe.co.nz/motors/car-par ... 977376.htm
http://www.trademe.co.nz/motors/car-par ... 825208.htm
Don't buy a HDi. I have had two, and worked fine initially, then both developed electrical faults.One drained the car battery, the other one went spas on the low boost setting, holding boost/holding boost/holding boost then BAM uncontrollable boost spike to boost cut. And the tech support( australia based) weren't helpful, suggesting the fault was in the actuator or waste gate lines, which was impossible , given that boost control was fine on the High boost setting.

[matt dunn]

http://www.trademe.co.nz/motors/car-par ... 163365.htm

That is the HKS EVC 3, I used to run one of them in my car,
I also run an HKS EVC 4 but the 3 is more finely tuneable.

Was the only controller that I found that I could guarantee would program properly in 1 lap of the track
if you knew which buttons to press, as I never really did test days and the first session we always has was qualifying.

Was the only thing that would make the boost anywhere near controllable, but still would not be accurate to within 2 psi all the time,
but I am not sure that much would.

I now run the G4+ as I need an adjustable boost switch and gear/wheelspin self adjusting boost.

Correct me if i/m wrong but the Linkplus G1 had the provision for an external map sensor didn't it?
If so and you have a spare input it may be cheaper to fit an external 3 bar map sensor?

http://www.trademe.co.nz/motors/car-par ... 150230.htm

[Stu-]

Yeah I've run a GM 3/5bar map sensor on a L+G1 before - easy to do.

If you look at GM map sensors you can use this to confirm the right one (some are advertised as 3bar etc but are only 1bar)
http://www.robietherobot.com/storm/mapsensor.htm

[wde_bdy]

Or just order it here, cheaper than Trade Me -
http://www.diyautotune.com/catalog/map- ... p-161.html

Callum

[~SlideWays~]

Thanks for the input guys, 3 bar map sensor makes the most sense I think.

Although, if the new sensor has an increased range does the current tune need to be adjusted to suit?

[BlakeNZ]

yes I'm sure it will need adjusting to suit, but a tuner can quickly "scale" the tune to suit the new MAP sensor, rather than having to retune.(IMHO)

[Lith]

I doubt it would, even the old Links have kpa as the load axis which means that so long as the Link is correctly configured for the new sensor the map should work the same as at the end of the day 100kpa is 100kpa, if the numbers don't match up there is an issue.

[~SlideWays~]

Found this on the Linkecu Forums about the G2 going from a 2.5 to 3 bar:

http://www.linkecu.com/forums/lem/74219 ... #832520387

The 3 bar sensor would work fine. You would need to calibrate the sensor in PCLink, but a re-tune would not be required except for the higher boost areas where you are currently not tuned.

So hopefully that is the same as the G1.

EDIT: and I have a hand controller as well as a PCLink so can change it to external map. Bought all this stuff 7 or 8 years ago with the plan to learn to tune... which still hasn't even started

[~SlideWays~]

Bah... spoke too soon.

http://www.linkecu.com/forums/LinkG1For ... #500718784

On the g1 a retune would be required as the row steps change when switching map sensors. A G4 would allow the swap with no need for a retune.

[Grrrrrrr!]

Hmm, can teh tables be exported to excel/csv? Shouldn't be too hard to interpolate between new and old values. At least then you'd just have to get teh new tables tweaked if needed.

[Bazda]

I just installed an Apexi AVC R. Yes they are pricey but i can now control boost per gear.
So i can run lower boost in the lower gears then ramp back up in the higher gears.

Just another option.

[Lith]

Gizzmo do a boost controller which is boost per gear as well, though I suspect it is worth upgrading MAP sensor regardless

[Bazda]

Gizzmo do a boost controller which is boost per gear as well, though I suspect it is worth upgrading MAP sensor regardless

I looked into Gizzmo and it doesnt. Needs a speed input to know what gear your in but it doesnt have that feature.

I used the MS-IBC and found it found it not that great to use. The Apexi AVC R has lots of functions and its actually easy to setup.

[matt dunn]

Bah... spoke too soon.

http://www.linkecu.com/forums/LinkG1For ... #500718784

On the g1 a retune would be required as the row steps change when switching map sensors. A G4 would allow the swap with no need for a retune.

That may only be if you are changing the internal map sensor, not adding the external one.
You would need to check.

[Lith]

Crap, I was told Gizzmo did boost by gear but just checked and its only by rpm....weird decision to just do rpm, but you are quite right.

Cruz of it is its clearly time to upgrade to a G4 haha

[~SlideWays~]

Crap, I was told Gizzmo did boost by gear but just checked and its only by rpm....weird decision to just do rpm, but you are quite right.

Cruz of it is its clearly time to upgrade to a G4 haha

G4 would solve problems, but have no budget for it with baby on the way and spending Death Star construction money on the house lol.

I'll check with STM about whether it's an easy scaling job or more work.

[Lith]

Let us know how you get on, wouldn't have thought it would be too nasty - depends on the relative scales I guess