Best way to build power without forced induction
11-17-2011, 11:21 PM
#53
What if I also port the head while doing the cams? Nothing ridiculous just a mild port? And also if the 2.4 mani is restrictive what other options are there?
Also would a lighter flywheel and new clutch help get more power thhrough the tranny withut loosing it?
Also would a lighter flywheel and new clutch help get more power thhrough the tranny withut loosing it?
11-18-2011, 12:29 AM
#56
if the L61 is anything like the LNF - a lightweight flywheel might cause an SES
purely from the engine changing speed too quickly.
did you look at the dyno thread?
did you notice that the highest hp n/a LE5 is only 6hp more than NWAE got out of his L61?
(and this was for an engine that suffers from nearly a 30hp deficit compared to the LE5)
11-18-2011, 12:39 AM
#57
I saw thay. I'm gonna try messaging him tomorrow to see what his.input will be. I know roughly how to pursue this its just finding the right parts. Right now I'm having issues with finding cams since I've got the dang cam position sensor or at east a way around that.
11-18-2011, 12:47 AM
#58
iirc 2008 wasn't VVT;
if this is the case - then I would suspect that you can do like the Twin Cam guys who run Quad4 cams;
in the case of Twin Cams with extra lobe on each cam -> the extra lobe is to let the engine at either light throttle or on idle run in sequential fire ~ the engine will otherwise run on batch fire
running older cams makes the engine by default run on batch fire ~ but adjusting the tune via HPT allows one to turn off any associated SES or issues resulting from not having the extra lobe.
summary: maybe you don't have to worry about the extra lobe - maybe HPT or trifecta can allow you to turn of this feature(?)
if this is the case - then I would suspect that you can do like the Twin Cam guys who run Quad4 cams;
in the case of Twin Cams with extra lobe on each cam -> the extra lobe is to let the engine at either light throttle or on idle run in sequential fire ~ the engine will otherwise run on batch fire
running older cams makes the engine by default run on batch fire ~ but adjusting the tune via HPT allows one to turn off any associated SES or issues resulting from not having the extra lobe.
summary: maybe you don't have to worry about the extra lobe - maybe HPT or trifecta can allow you to turn of this feature(?)
11-18-2011, 07:53 PM
#61
Ok guys I have an.issue I'm hoping y'all can help with real quick cause y'all seem really knowledgable about the L61. Right now the only performance mod I have is a cold air intake using the spectre parts you can.get at auto parts stores. I started out with a sgort ram intake and never had any problems. The about 3 weeks ago I lengthened it and moved the filter under tge headlight. It ran fine. I replaced the plugs with Bosch platinum 4s. The next time I drove I got a check engine light. I was told thay those plugs are junk so I replaced them with NGK plugs. Also as a precaution I replaced the MAF sensor. Ichecked for any leaks in the intake and didn't find any but went ahead and ran some sealant around the coupler clamps. My check engine light went out and has been out for the past two weeks and then today it came back on. The tach needle doesn't bounce or anything but the idle does seem choppy. I'm just at a loss as to what's going on. Could the longer pipe cause a misfire?
11-18-2011, 09:52 PM
#63
Senior Member
could be a problem with the spectre kit. and the maf on this car is very sensitive, maybe a problem there. i would put the stock airbox on if not the maf and see what happens. never heard of a miss fire problem from an intake though.
as for your question about cams, this thread has your info. you have the new intake cam cut to match stock length, and have your stock position sensor pressed onto the new cam.
https://www.cobaltss.net/forums/2-2l...7-cams-122345/
Edit: Guess i shoulda read the whole thread. LOL!
as for your question about cams, this thread has your info. you have the new intake cam cut to match stock length, and have your stock position sensor pressed onto the new cam.
https://www.cobaltss.net/forums/2-2l...7-cams-122345/
Edit: Guess i shoulda read the whole thread. LOL!
Last edited by scagnetti76; 11-18-2011 at 10:35 PM.
11-18-2011, 09:57 PM
#65
The thing is with a short ram I have no problems, just with the longer cold air intake. I've run with the.short ram for.almost 8 months with no issues at all. And it really didn't start til after I changef plugs. But once I get going it runs fine, its just at idle that it seems to have an issue.
11-18-2011, 10:34 PM
#66
Senior Member
Looked around a bit and others have cured this code by changing fuel filter, new injectors, new coils, and fixing vacuum leaks. (not all at once.) Since you played with the intake, maybe a vacuum leak? Hope you get it figured out.
11-18-2011, 10:42 PM
#67
Well if anything I'm thinking maybe coils because I pulled the air filter off and stuck my hand over the pipe and its stalling pretty quickly so I don't think its a vacuum leak. But the car is still under warranty so I think I'm just.gonna take it to the dealership and let them figure it out abd replace anything if need be.
11-19-2011, 01:19 AM
#69
WHOA! - you need to know (if you don't already);
I'd would STRINGLY encourage you to put the stock airbox back on before you do this;
Cobalts, and cobalt owners tend to get shafted for aftermarket parts of any kind ~ McGuyver'd or otherwise...
recap: if you go in to get warranty with this home made CAI - you're probably going to get denied.
Cobalts, and cobalt owners tend to get shafted for aftermarket parts of any kind ~ McGuyver'd or otherwise...
recap: if you go in to get warranty with this home made CAI - you're probably going to get denied.
11-19-2011, 01:31 AM
#70
And as for the warrranty work, I don't even have the stock airbox anymore. They cant void the warranty if the intale isn't directly responsible for the problem. And being a misfire instead of runninh lean I highly doubt the intake is the problem.
11-19-2011, 12:49 PM
#72
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You're from Joshua?! Seriously?!
And as for the warrranty work, I don't even have the stock airbox anymore. They cant void the warranty if the intale isn't directly responsible for the problem. And being a misfire instead of runninh lean I highly doubt the intake is the problem.
And as for the warrranty work, I don't even have the stock airbox anymore. They cant void the warranty if the intale isn't directly responsible for the problem. And being a misfire instead of runninh lean I highly doubt the intake is the problem.
11-19-2011, 12:57 PM
#73
Yeah I just got.off the phone with them. I've gotta call back Monday to get it in and let them look at it.
Jesus, the.internet just made a small world that much more so. Haha
Edit: so I have no idea what's going on. I drove the car like 15 miles today and the light went off. I'm still gonna try to get it into the dealership next week and let them figure it out.
Jesus, the.internet just made a small world that much more so. Haha
Edit: so I have no idea what's going on. I drove the car like 15 miles today and the light went off. I'm still gonna try to get it into the dealership next week and let them figure it out.
Last edited by 08baltls; 11-19-2011 at 05:01 PM.
11-20-2011, 12:24 PM
#74
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Can you take a pic. of your setup. One issue could be the placement of the MAF, or the sensor is blocked and not getting enough air in order to communicate back to the ECU.
