1005 rwhp 03 C5...
TECH Regular
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From: boostville
this sounds exactly like some form of fuel/boost cut. I've seen it a lot with the EVO ECU's.
I have no idea about HP tuners so its kind of hard to explain but I'll give it a shot, what kind of resolution does your ECU software have?
anyway to tell what load cell/area you are in?
is it possible that much boost @ 5k puts you OFF the MAP (out of the range of your software) and the ECU just shuts down by closing the throttle?
from your dyno it looks like its happening @ peak TQ, which is when the cylinder pressure would be the highest, so you should be at the highest load point on your MAP.
I have no idea about HP tuners so its kind of hard to explain but I'll give it a shot, what kind of resolution does your ECU software have?
anyway to tell what load cell/area you are in?
is it possible that much boost @ 5k puts you OFF the MAP (out of the range of your software) and the ECU just shuts down by closing the throttle?
from your dyno it looks like its happening @ peak TQ, which is when the cylinder pressure would be the highest, so you should be at the highest load point on your MAP.
My HPTuners table goes all teh way to 315KPA so unless he is running much more boost then he thinks, hes still on the map, and even when you run off the map on these ECU's it doesn't do that.
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From: bucks county pa
Thread Starter
TECH Apprentice
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From: bucks county pa
Thread Starter
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From: bucks county pa
this sounds exactly like some form of fuel/boost cut. I've seen it a lot with the EVO ECU's.
I have no idea about HP tuners so its kind of hard to explain but I'll give it a shot, what kind of resolution does your ECU software have?
anyway to tell what load cell/area you are in?
is it possible that much boost @ 5k puts you OFF the MAP (out of the range of your software) and the ECU just shuts down by closing the throttle?
from your dyno it looks like its happening @ peak TQ, which is when the cylinder pressure would be the highest, so you should be at the highest load point on your MAP.
I have no idea about HP tuners so its kind of hard to explain but I'll give it a shot, what kind of resolution does your ECU software have?
anyway to tell what load cell/area you are in?
is it possible that much boost @ 5k puts you OFF the MAP (out of the range of your software) and the ECU just shuts down by closing the throttle?
from your dyno it looks like its happening @ peak TQ, which is when the cylinder pressure would be the highest, so you should be at the highest load point on your MAP.
the map table is a two axis, RPM AND KPA. kpa goes to 315(3bar) so that isnt the issue.
FormerVendor
Joined: Dec 2001
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From: WWW.SPEEDINC.COM
So, I don't remember the answer to this question, but it is or is not going into reduced power mode?
If you want to send me a copy of your hpt file along with injector/fuel pressure specs and I'll look it over.
intmd-8@sbcglobal.net
If you want to send me a copy of your hpt file along with injector/fuel pressure specs and I'll look it over.
intmd-8@sbcglobal.net
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From: bucks county pa
So, I don't remember the answer to this question, but it is or is not going into reduced power mode?
If you want to send me a copy of your hpt file along with injector/fuel pressure specs and I'll look it over.
intmd-8@sbcglobal.net
If you want to send me a copy of your hpt file along with injector/fuel pressure specs and I'll look it over.
intmd-8@sbcglobal.net
jimmy did u see the vid?
thanks!
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Teching In
Joined: Dec 2006
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I dont think spark is your issue, I ran 30psi on stock 98 c5 coils without a problem, made 1200rwhp. I did run into a problem with blowing the throttle body closed and kicking it in to pr mode. What Tbody are you running, i was running and L76 intake with GM tbody, at 20psi it would move the blade, pcm monitors ACC ped poss and TPS if they dont match, it goes to PR mode. I swiched to a TPIS sheetmetal intake and there Tbody and problem was solved. Sping was to week in the stock tbody. Im not sayin this is it but mine did the same thing at about the same power. Hope you solve it.
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I dont think spark is your issue, I ran 30psi on stock 98 c5 coils without a problem, made 1200rwhp. I did run into a problem with blowing the throttle body closed and kicking it in to pr mode. What Tbody are you running, i was running and L76 intake with GM tbody, at 20psi it would move the blade, pcm monitors ACC ped poss and TPS if they dont match, it goes to PR mode. I swiched to a TPIS sheetmetal intake and there Tbody and problem was solved. Sping was to week in the stock tbody. Im not sayin this is it but mine did the same thing at about the same power. Hope you solve it.
Chris.
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From: bucks county pa
I dont think spark is your issue, I ran 30psi on stock 98 c5 coils without a problem, made 1200rwhp. I did run into a problem with blowing the throttle body closed and kicking it in to pr mode. What Tbody are you running, i was running and L76 intake with GM tbody, at 20psi it would move the blade, pcm monitors ACC ped poss and TPS if they dont match, it goes to PR mode. I swiched to a TPIS sheetmetal intake and there Tbody and problem was solved. Sping was to week in the stock tbody. Im not sayin this is it but mine did the same thing at about the same power. Hope you solve it.
did you run stock lenght wires?
coils relocated so wires are long
thats what i thought origanilly, psi increased, rpms would drop but at the latest dyno date its doing at lower psi now. i cannot see the blade being closed at 7.5 psi.
i think that i am losing the crank signal, now i was told that if that was the case that i'd see a code right away. anyone suggest otherwise?
I dont think spark is your issue, I ran 30psi on stock 98 c5 coils without a problem, made 1200rwhp. I did run into a problem with blowing the throttle body closed and kicking it in to pr mode. What Tbody are you running, i was running and L76 intake with GM tbody, at 20psi it would move the blade, pcm monitors ACC ped poss and TPS if they dont match, it goes to PR mode. I swiched to a TPIS sheetmetal intake and there Tbody and problem was solved. Sping was to week in the stock tbody. Im not sayin this is it but mine did the same thing at about the same power. Hope you solve it.
that is happening to me on a customers car... .its a 03 zo6 with kooks,corsa and a procharger on 8psi... made 603 but it keeps goin into reduced engine power.... its throwing a code i forget the exact one at the moment but it was something to do with the throttle blade....it doesnt do it everytime but most of the time it does....
that is happening to me on a customers car... .its a 03 zo6 with kooks,corsa and a procharger on 8psi... made 603 but it keeps goin into reduced engine power.... its throwing a code i forget the exact one at the moment but it was something to do with the throttle blade....it doesnt do it everytime but most of the time it does....
Unless nick has this code turned off, his seems like a different problem.
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From: bucks county pa
BTW even if it is turned off itll still show in the DIC
when u get that code u have to reset before running again not the case here.
Anything yet Nick? How small of a plug gap did you go down to? If the car runs around at 14.7 under normal driving you should have no issue running a NGK #8 at a .20 thou gap.
did you run stock lenght wires?
coils relocated so wires are long
thats what i thought origanilly, psi increased, rpms would drop but at the latest dyno date its doing at lower psi now. i cannot see the blade being closed at 7.5 psi.
"" i think that i am losing the crank signal, now i was told that if that was the case that i'd see a code right away. anyone suggest otherwise?"""
coils relocated so wires are long
thats what i thought origanilly, psi increased, rpms would drop but at the latest dyno date its doing at lower psi now. i cannot see the blade being closed at 7.5 psi.
"" i think that i am losing the crank signal, now i was told that if that was the case that i'd see a code right away. anyone suggest otherwise?"""
who knows if this is it or not. Just one of those things to check. Then you can rule it out if not...Good luck,
Dave
Last edited by dacajun; Dec 30, 2007 at 02:27 AM. Reason: spelling
Launching!
Joined: Apr 2003
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From: Florida
Yeah I am running NGK#8 race .025 and I was 11.x AFR driving and mine actually held up (cruise AFR is fix now)