Anyone hit these kinda numbers
09-10-2007, 06:58 PM
#3
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my engine likes air what can i say. On a side note my tune is still being worked on and my afr is stupid rich uptop as you can tell 99%idc on 60's. I ordered a eio plugin so i could get it tuned a little finer. My questions is why is my car going from 11.5~11.6 to richer then 10.0 after like 5800 rpms? what kinda power do you think i am leaving on the table?
2.5 pullied
2.5 pullied
Last edited by lsjwannabe; 09-10-2007 at 06:58 PM. Reason: Automerged Doublepost
09-10-2007, 07:20 PM
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my engine likes air what can i say. On a side note my tune is still being worked on and my afr is stupid rich uptop as you can tell 99%idc on 60's. I ordered a eio plugin so i could get it tuned a little finer. My questions is why is my car going from 11.5~11.6 to richer then 10.0 after like 5800 rpms? what kinda power do you think i am leaving on the table?
2.5 pullied
2.5 pullied
i know exactly why it is. matt at tune time an i had a conversation about this the other day. 60's max out the table. you have flat out, out ran the ecm in it's capability to calculate that high in the tables that are defined. this is the exact same thing that happened on a turbo car he was tuning. you have two options. back the boost down via the boost control settings. or lean it out up top and hope it works enough, which most likely it won't.
i just though id never see the eaton out run the ecm's limits, and by god, you found out how to do it.
in short, you are moving more air than the ecm has parameters for.
09-10-2007, 07:32 PM
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so thats why i hit the rediculous afr after 5600 because that is were i am at 1.36 and it trys to back it down because the car wants to push harder than that
The boost is only 18psi btw a little low for a 2.5 pulley but i do have the cti header and 3" dp, but im on stock catback
I want to lean it out becuase my egt have to be sky high especially at high rpms with to much fuel up top
The boost is only 18psi btw a little low for a 2.5 pulley but i do have the cti header and 3" dp, but im on stock catback
I want to lean it out becuase my egt have to be sky high especially at high rpms with to much fuel up top
Last edited by lsjwannabe; 09-10-2007 at 07:32 PM. Reason: Automerged Doublepost
09-10-2007, 07:34 PM
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so thats why i hit the rediculous afr after 5600 because that is were i am at 1.36 and it trys to back it down because the car wants to push harder than that
The boost is only 18psi btw a little low for a 2.5 pulley but i do have the cti header and 3" dp, but im on stock catback
The boost is only 18psi btw a little low for a 2.5 pulley but i do have the cti header and 3" dp, but im on stock catback
ok, now it gets funny because you should not be out running the tables at 18 psi. then again, you are moving a crap ton more air then i am, so that could be it. {im not ruling anything out at this point}
in the back of my mind, im thinking it has dick to do with psi, but more into the airflow side of it. hence them being airflow related tables, not psi related tables.
09-10-2007, 07:46 PM
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Have you seen other cobalts with my mods doing that its not something i hear about to often. My mods are in the vbgarage if you had not looked. What the hell is gonna happen when i wanna run meth and a ported head
i can email you the tune and log if you want
i can email you the tune and log if you want
Last edited by lsjwannabe; 09-10-2007 at 07:46 PM. Reason: Automerged Doublepost
09-10-2007, 07:48 PM
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there is a couple guys on here runnin a 2.5 pully. they might have a bit more insite than i do into this as far as the pulley size goes, and how it acts. the ported head may lead back to the same thing. moving more air. the water injection won't have anything to do with it, just means you can get stupid with the timing, and lean it out.
send me a pm, i'll give you my e-mail addy
send me a pm, i'll give you my e-mail addy
09-10-2007, 11:12 PM
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wow your moving some serious air!!! I used to have the same set up as you and the highest I had was like 1.11-1.15....BUT 1.34....holy ****.
NEways.... I am running stupid rich right now but all the scans seem fine....oh I havae meth inj too. My inj% is like 80% (mods in my garage). My timing is a bit higher than you though.....How does the car feel???
NEways.... I am running stupid rich right now but all the scans seem fine....oh I havae meth inj too. My inj% is like 80% (mods in my garage). My timing is a bit higher than you though.....How does the car feel???
09-11-2007, 12:58 AM
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wow, thats all i can say.
i know exactly why it is. matt at tune time an i had a conversation about this the other day. 60's max out the table. you have flat out, out ran the ecm in it's capability to calculate that high in the tables that are defined. this is the exact same thing that happened on a turbo car he was tuning. you have two options. back the boost down via the boost control settings. or lean it out up top and hope it works enough, which most likely it won't.
i just though id never see the eaton out run the ecm's limits, and by god, you found out how to do it.
in short, you are moving more air than the ecm has parameters for.
i know exactly why it is. matt at tune time an i had a conversation about this the other day. 60's max out the table. you have flat out, out ran the ecm in it's capability to calculate that high in the tables that are defined. this is the exact same thing that happened on a turbo car he was tuning. you have two options. back the boost down via the boost control settings. or lean it out up top and hope it works enough, which most likely it won't.
i just though id never see the eaton out run the ecm's limits, and by god, you found out how to do it.
in short, you are moving more air than the ecm has parameters for.
09-11-2007, 11:37 AM
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after some thinking, you might be outrunning it due to how fast the rpms are screaming to 7200. where as in other gears, it's not as fast. the ecm has more control at that point. id suggest turning the boost down in first to gain some control back. the tires will still spin, but not as violent.
dunno, just an idea. the whole commanding 10.10 and runnin 11.5 a/f is a bit wacky, but i have seen weirder things
dunno, just an idea. the whole commanding 10.10 and runnin 11.5 a/f is a bit wacky, but i have seen weirder things
09-11-2007, 05:16 PM
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wow your moving some serious air!!! I used to have the same set up as you and the highest I had was like 1.11-1.15....BUT 1.34....holy ****.
NEways.... I am running stupid rich right now but all the scans seem fine....oh I havae meth inj too. My inj% is like 80% (mods in my garage). My timing is a bit higher than you though.....How does the car feel???
NEways.... I am running stupid rich right now but all the scans seem fine....oh I havae meth inj too. My inj% is like 80% (mods in my garage). My timing is a bit higher than you though.....How does the car feel???
after some thinking, you might be outrunning it due to how fast the rpms are screaming to 7200. where as in other gears, it's not as fast. the ecm has more control at that point. id suggest turning the boost down in first to gain some control back. the tires will still spin, but not as violent.
dunno, just an idea. the whole commanding 10.10 and runnin 11.5 a/f is a bit wacky, but i have seen weirder things
dunno, just an idea. the whole commanding 10.10 and runnin 11.5 a/f is a bit wacky, but i have seen weirder things
At 4200 rpms in 3rd i am doing 1.28 so i don't know what to think. I am going to turn that boost down just so i can save my damn tires
09-11-2007, 05:24 PM
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09-12-2007, 10:49 AM
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I think your maf cal is 15% off on the too much air side. Judging from your LTFT in non PE mode.
Also whoever said 42.5lbers are good to 400hp lol...not on teh stock returnless system..and even if you convert it over your going to run out of pulsewidth trying to support 400hp
Im around roughly 370 at the crank with my turbo and im seeing 97% idcs on 60lbers
Also whoever said 42.5lbers are good to 400hp lol...not on teh stock returnless system..and even if you convert it over your going to run out of pulsewidth trying to support 400hp
Im around roughly 370 at the crank with my turbo and im seeing 97% idcs on 60lbers
09-12-2007, 10:55 AM
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highest cyl air mass I've hit was about 1.27 @ 7100 RPM with stock exhaust, my numbers are not that consitant. If your numbers are like that it's most likely your tune and the lack of a real exhaust system on the car.
My Mods:
2.7 intense pulley
60lb injectors
Larger Idler
K&N CAI
Stock Header
2.5in Catless D/P
Magnaflow Catback
Tweaked HP Tune
Never really dynoed but friend of mine dynoed at on a Dynojet (yah I know) 265whp and I was dead even with him so...I dunno.. Something doesn't stack up with the numbers but of course I am not doubting it either. I need some cooling mods to run more timing. Keep having timing pulled because of high temps..
My Mods:
2.7 intense pulley
60lb injectors
Larger Idler
K&N CAI
Stock Header
2.5in Catless D/P
Magnaflow Catback
Tweaked HP Tune
Never really dynoed but friend of mine dynoed at on a Dynojet (yah I know) 265whp and I was dead even with him so...I dunno.. Something doesn't stack up with the numbers but of course I am not doubting it either. I need some cooling mods to run more timing. Keep having timing pulled because of high temps..
09-12-2007, 11:07 AM
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2.5 pullied
60# injectors
cti header
3" cti catless dp
k&n drop in
fast98 tuned
dual pass endplate *option b*
Second H/E
hurst sts
bully stage4 full ceramic clutch
solid tranny mounts
cab's
dynotune wideband
autolite step colder plugs
stg2 axles
other little supporting mods...
stock catback to
i only have a drop in and the maf was recently cleaned. Car has never thrown a code as well
How would i recalibrate it i can have my bro do it today i would just like to know myself
60# injectors
cti header
3" cti catless dp
k&n drop in
fast98 tuned
dual pass endplate *option b*
Second H/E
hurst sts
bully stage4 full ceramic clutch
solid tranny mounts
cab's
dynotune wideband
autolite step colder plugs
stg2 axles
other little supporting mods...
stock catback to
How would i recalibrate it i can have my bro do it today i would just like to know myself
Last edited by lsjwannabe; 09-12-2007 at 11:07 AM. Reason: Automerged Doublepost