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Old 07-29-2008, 12:24 AM   #1
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Default Overboost protection not...protecting

I have overboost set at 149 kpa but looking at my log I'm getting MAP readings above that. Pulse width is not going to 0. What the hell am I doing wrong.


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Old 07-29-2008, 02:42 AM   #2
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could the firmware be corrupted? I'm going to switch to HR tomorrow, I guess I'll just see what happens.
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Old 07-29-2008, 02:43 AM   #3
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Just eliminating my dopey irrelevent reponse!

Jeez. You, me and savington. Car's are just about clones of each other.

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Old 07-29-2008, 03:17 AM   #4
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Overboost cut doesn't do anything with the WG. It just cuts fuel/spark when you boost too high. It worked nicely on mine.

I'll take a closer look tomorrow.

-Mike
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Old 07-29-2008, 11:34 AM   #5
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yeah I'm not using an EBC right now, just wastegate, so it should cut when I have it set to cut. And grippgoat is right, it's not cutting boost, it should cut fuel.
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Old 07-29-2008, 11:50 AM   #6
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Try it with Fuel/Ignition.

I know we were hitting it the other day in Pauls begi-s car and we smacked off it. I want to say it was fuel/ignition cut.
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Old 07-29-2008, 11:56 AM   #7
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I use fuel only cut....you know when it kicks in....



and it shows up: notice my AFR and duty cycle when it does.
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Old 07-29-2008, 01:33 PM   #8
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well fuel cut alone isn't doing ****. it sails right by my boost cut threshold without a hiccup. I'll try spark and fuel. Maybe this is an issue with the 94-95 MSPnP if me, Cueball, Savington and Paul all have this.
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Old 07-29-2008, 01:43 PM   #9
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029v had an issue with the overboost cut not working with 4 bar MAP sensors. I thought it was fixed with 029y4, but I'll have to check.
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Old 07-29-2008, 03:32 PM   #10
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Duh.....

Overboost not boost control....

Duh....

Which way did he go George, which way did he go...
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Old 07-29-2008, 03:52 PM   #11
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Is your configurator setup to show everything in KPA? Maybe thats the culprit, my overboost protection is in PSI.
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Old 07-29-2008, 03:59 PM   #12
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Quote:
Originally Posted by Saml01 View Post
Is your configurator setup to show everything in KPA? Maybe thats the culprit, my overboost protection is in PSI.


i like matt's "issue with 4-bar and 029v" explanation better....
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Old 07-29-2008, 04:11 PM   #13
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Quote:
Originally Posted by Braineack View Post
i like matt's "issue with 4-bar and 029v" explanation better....
You always side with him.
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Old 07-29-2008, 05:24 PM   #14
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sam, everything is in kpa, and as you can see in my first post overboost proection is also in kpa. I tried it with spark and fuel cut and I was still able to pass the overboost cut off with nothing cutting out.
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Old 07-29-2008, 05:29 PM   #15
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there's actually a check box in the configurator to change most things to psi....that's what i run, my overboost is set at 16.5psi
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Old 07-29-2008, 05:32 PM   #16
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Quote:
Originally Posted by Braineack View Post
there's actually a check box in the configurator to change most things to psi....that's what i run, my overboost is set at 16.5psi
I've seen that, i just don't see what difference that would make but I'll try it for ***** and giggles.
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Old 07-29-2008, 05:35 PM   #17
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cause 15psi = 15psi to me.

15*7+100 is not easy for me to compute in my head....i think its around 200kPa
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Old 07-29-2008, 05:45 PM   #18
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204ish http://www.csgnetwork.com/presskpapsicvt.html
My point wasn't that it's easier to understand one way or the other. I meant that I don't see how having it set to psi or kpa would effect whether or not the overboost protection works (unless of course it was set to psi and you set it to 204 thinking it was kpa. Unless you're capable of hitting 189psi of boost that is.). Mines set at 149kpa which is just about 7psi but I've been able to hit almost 9psi.
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Old 07-29-2008, 06:03 PM   #19
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i dont think it has anythign to do with the issue.
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Old 07-29-2008, 08:18 PM   #20
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For Over boost protection, I'm set to fuel + spark, and "Cut 'n' sparks out of BASE NUMBER" is set to 50. But I don't even know what that means.

EDIT: Oh, my base number is 5, so is yours. So yours is set to only cut 3 out of 5 sparks. Maybe that is your problem? I'd still think you'd notice it kicking in.

-Mike

Last edited by grippgoat; 07-29-2008 at 08:32 PM.
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