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Old 07-11-2003, 06:17 PM   #1
mazdman
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Member#: 28506
Join Date: Nov 2002
Vehicle:
2005 STi
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Default Installed Secs 1001 !?

I just installed the SECS 1001 in my STI. The install & operation
went great & I took it for a little spin. My peak boost pressure
was 15.5 psig w/ an intake temp of 77F & an outside temp of
70F. However, when I first installed it & started it up, I
monitored the knock count (KC) & just by blipping the
throttle in my driveway, I could get a KC of 3-5 deg!

During my first drive w/ the unit, I noticed it registering KC
as soon as I tipped into the throttle. During a WOT run, I
saw that the KC would increase, then decrease. I saw a
peak KC of about 8 deg w/ 94 octane gas. I'm wondering
if this things got a hyper sensitive or defective knock sensor.

By the way, when I shut the car off, it says "GOODBYE" &
displays the time. But when I start it backup, I have to hit
"ENTER" to start displaying the data. I thought it should
return to the last display I was using.

Anyone care to share their data or thoughts?
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Old 07-11-2003, 06:24 PM   #2
STI 2 NV
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Default

i was thinking about getting one for my sti. where did u get it from? is it worth the $? would it be pointless to have gauges as well?
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Old 07-11-2003, 06:29 PM   #3
mazdman
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Quote:
Originally posted by STI 2 NV
i was thinking about getting one for my sti. where did u get it from? is it worth the $? would it be pointless to have gauges as well?
I got it from Quantum racing & definitely think it's worth the
money. It's like getting a bunch of gauges & a scan tool all
in one. I got the single DIN unit which I mounted where the
radio blanking plate is & don't have too much trouble checking
it out by just scanning over there.
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Old 07-11-2003, 06:54 PM   #4
KoneKiller
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2004 WRX STi WRB
Red 1990 Spec Miata

Default Re: Installed Secs 1001 !?

Quote:
Originally posted by mazdman


During my first drive w/ the unit, I noticed it registering KC
as soon as I tipped into the throttle. During a WOT run, I
saw that the KC would increase, then decrease. I saw a
peak KC of about 8 deg w/ 94 octane gas. I'm wondering
if this things got a hyper sensitive or defective knock sensor.
I don't own one of these... yet. I was looking at the owner's manual on the 'net and have some question/comments:

The manual mentions KN and describes it as the number of degrees of ignition retard in response to detection of knock. That would seem different than 'knock count'.

If what you are seeing is knock induced timing retard of several degrees, I *feel* this is about right. I think you would see similar values on a a non-turbo motor, too. This is why we have ECUs!

Was there any audible ping? Or all detected by the sensor in the cyl head?

What is the IA value at the time that the KN happens?

Neat stuff! Is it worth $500?
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Old 07-12-2003, 04:32 AM   #5
StealthWagon
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Default

ust to clear this topic up. The KC value on your unit is the timing advance, if it is positive, you are fine. Negative means the ECU is pulling tming due to knock. Soundslike you are fine. I have one of these and yes it is worth every penny.

Another thing, the speed displayed from the ECU on the unit is your actual road speed, while te speed on your guage cluster is a few mph higher, interesting, (confirmed with GPS unit!)
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Old 07-12-2003, 05:45 PM   #6
Guyver
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Cool

What is the web site for this product. Sounds Interesting
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Old 07-12-2003, 05:55 PM   #7
MTMS4
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Default

This is a UK product and their website is:

www.psi3.co.uk

You can dowload a pdf file of the operator's manual.

There are several US distributors selling these e.g.

www.quantum-racing.com

Hope this helps,
Bill.
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Old 07-13-2003, 05:08 AM   #8
WRX_Mundi
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Default

Quote:
Originally posted by STI 2 NV
i was thinking about getting one for my sti. where did u get it from?
I got mine from Quantum Racing. Everything went smoothly, and it is incredibly easy to install (barring additional sensors).

Quote:
is it worth the $?
A tough question. It isn't cheap at $478, but it sure is nice. It displays lots of info in a real nice way, has some triggering ability (water spray when boost > XX psi, for instance), can display even more info with the right sensors, and they seem to give basically free firmware upgrades. I'm happy I got it and it will be really nice when doing things like hill climbs and road courses where I am stressing the car more. Like most customers of any product, I want more features.

Quote:
would it be pointless to have gauges as well?
Depends on which gauges. I was forced to get the factory boost gauge, and I find the PSI3 actually easier for me to read, not to mention the factory gauge blocks a bunch of the dash. On the other hand, some people like to have analog gauges, especially if there is a better spot for them. Also, the unit can only display 4 values at once (admittedly, a press of a button will show you another 4, and the alarms always work). Let's see:

oil pressure (have to buy sensor)
oil temperature (have to buy sensor)
fuel pressure (have to buy sensor)
EGT (have to buy sensor)
coolant temperature
boost pressure
intake temperature
charge temperature (no sensor available yet)

I count 8 different values that would sure be nice to know, with some questionable (do I really need to see fuel pressure?).

There is certainly an argument that the driver really doesn't need to see all this information (and shouldn't). So really I imagine some of these could be relegated to a second page as long as alarms are set (e.g. battery voltage has low and high alarm settings -- other than that I don't need to see the value). I think a lot of racers want only tach, maybe speed, a lap timer, and a bunch of warning lights -- they don't want to actually see oil pressure while racing. Now with a navigator, that may be different, and of course you want all this stuff logged for later.

I'm thinking of putting a Blitz DTT DCII Turbo Timer next to the cupholder (as shown in this picture). Unfortunately it displays in bars (hkpa) instead of psi. That relieves me of one value, but still leaves some more. The more I'm thinking about it, the less I am wanting to install the TT -- it looks aftermarket, requires a lot of splicing and stuff to install, and I don't think I really need it.

A Defi-Link Display would be nice, but it is more complicated to set up and only seems to display two values at a time, and would cost as much as a PSI3. Other displays include the Stack ST8100 dash with 4 displayed values, or the Pi Research C-Dash, both running about $1500. On the higher end are things like a Pi Research System 2 or Motec ADL which offer a lot more (accelerometers, track mapping software, data logging, etc.) but they also run $4000+.

Maybe we'll be lucky and PSI3 will come out with an upgrade with a bigger display. The more I think about it, the more I think I'll just stick with the PSI3 unless I do something like an ADL or System 2 (if I really get into racing).
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Old 07-14-2003, 08:01 AM   #9
mazdman
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2005 STi
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Default

Quote:
Originally posted by StealthWagon
ust to clear this topic up. The KC value on your unit is the timing advance, if it is positive, you are fine. Negative means the ECU is pulling tming due to knock. Soundslike you are fine. I have one of these and yes it is worth every penny.

Another thing, the speed displayed from the ECU on the unit is your actual road speed, while te speed on your guage cluster is a few mph higher, interesting, (confirmed with GPS unit!)
Hey, thanks for the info. I thought the results were pretty
weird. I'm running DSMlink in my GSX & the only time you
get a reading on knock retard (always a +value) is when you
are getting actual knock & the ECU is pulling timing. Thanks for clearing that up. I'll start looking more closely for the +/- value.

I did notice that the intake & coolant temps read about 2-4 degF
higher than the outside temp display after the car has sat all
night & I first start it up. Do you see the same? Also I'm kinda
wondering if I should have waited for the VFD instead of the LCD. I don't have a heat issue with the single DIN unit but it's a real
PITA to read the display in bright sunlight.
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Old 07-14-2003, 11:46 AM   #10
StiDreams
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Default

Do they have an ETA on the VFD yet?
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