05-25-2009, 06:22 PM | #15 |
Drives: Cobalt SS/SC Join Date: May 2009
Location: Vista, CA
Posts: 46
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remember, you can run a higher afr on direct injection engines. different ball game here. the injectors should be good to what the stock engine can handle boosted.
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05-25-2009, 06:25 PM | #16 |
Drives: Hyundai Sonata Join Date: Feb 2009
Location: Little Rock, AR
Posts: 497
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Hahah yeah we're seeing the same one. Sorry, wasn't too clear. I was commenting on how incredibly flat that torque curve is. Because of this, I think that GM's next V-8 that they develop should be a Direct Injected VVT DOHC motor so we can get awesome mileage, great power, and ridiculous torque curves like the one put up by the V-6.
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05-25-2009, 06:32 PM | #17 | |
36.58625, -121.7568
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Quote:
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05-25-2009, 06:57 PM | #18 |
AwesomeBillDawesonville
Drives: CGM 2SS/RS =) Join Date: May 2009
Location: Jersey Shore
Posts: 2,067
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So the AFR should be lower than 11.4?
Can the ECU be tuned or does it need to be replaced to get more performance? Hopefully someone makes a program for that soon =)
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Order placed on 1/13/11 - Purchased 2/22/11 2SS/RS CGM |
05-25-2009, 07:54 PM | #19 |
Drives: Hyundai Sonata Join Date: Feb 2009
Location: Little Rock, AR
Posts: 497
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It should be higher than 11.4. That's very, very rich (lots of fuel, not enough air). 12.5 is about where you want it on a naturally aspirated motor for the best power. 14.7 is the "perfect" ratio, or stoiciometric ratio, where you have 14.7 parts air to 1 part fuel by weight and it creates a complete combustion.
And the ECU can be tuned (hopefully) to adjust this and many other parameters. |
05-25-2009, 08:15 PM | #20 | |
AwesomeBillDawesonville
Drives: CGM 2SS/RS =) Join Date: May 2009
Location: Jersey Shore
Posts: 2,067
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Quote:
So a CAI should bump it up to 12.5+? Atleast these numbers aren't to far off from a New Mustang Gt...
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Order placed on 1/13/11 - Purchased 2/22/11 2SS/RS CGM |
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05-25-2009, 08:17 PM | #21 |
Drives: fanboys and ass kissers crazy. Join Date: May 2008
Location: Ottawa, Ontario
Posts: 7,280
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I cannot wait until someone rips a 12.x with the V6.
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05-25-2009, 08:39 PM | #22 |
Drives: Rust bucket and a jalopy Join Date: May 2009
Location: Central florida
Posts: 52
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05-25-2009, 08:51 PM | #23 |
Drives: fanboys and ass kissers crazy. Join Date: May 2008
Location: Ottawa, Ontario
Posts: 7,280
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Guys were rippin' 9's with the Grand Nationals. Those V6's are nothing compared to this new engine.
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"BBOMG - More than just a car show.... It's an experience!"
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05-25-2009, 09:17 PM | #24 |
Drives: Hopefully a Camaro in a year Join Date: Apr 2009
Location: Staten Island, NY
Posts: 727
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how about weight? im guessing the GN is quite a bit lighter? or am i wrong? And what can we expect with a tune and CAI?
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05-25-2009, 09:24 PM | #25 |
Drives: Rust bucket and a jalopy Join Date: May 2009
Location: Central florida
Posts: 52
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05-25-2009, 10:17 PM | #26 | |
Drives: Hyundai Sonata Join Date: Feb 2009
Location: Little Rock, AR
Posts: 497
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Quote:
The thing about it is that at WOT (Wide Open Throttle) the engine goes into what is known as Open Loop mode. This is because the O2 sensors that come on cars are really only accurate close to the 14.7:1 ratio. As it gets further away from that number, it becomes exponentially more inaccurate. This is why a good tuner uses a wide-band O2 sensor. Anyway,when this happens, the ECU stops taking readings from the O2 sensor and basically injects a pre-determined amount of fuel. Engineers from the factory tend to play it safe and tell it to inject more than what is needed. You don't want to run lean at WOT. It would take more than a CAI to cause it to run 12.5:1. A tune is definitely in order. |
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05-25-2009, 11:37 PM | #27 |
The Enemy ;)
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The V6 in the Camaro is a very impressive motor. It looks like it will be a hell of a platform to mod.
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05-26-2009, 12:33 AM | #28 |
Drives: Camaro Join Date: Mar 2009
Location: Oshawa
Posts: 126
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Is the gmpp CAI good enough?
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