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Unread 02-22-2009, 03:01 PM   #1
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Default Chevy Cavaliers Can Go Fast

Who out there agrees with me that with a little money and a coupple days in the drive way you can take a chevy cavalier new or old and turn it into a speed demon. I have a 2003 chev cavilier 4 door with a 2.2L L4 eco tec ,no body mods stock rims and tires I only changed a fuew things first i threw in a AEM cold air intake with a air bypass valve Cost was just over $200. That was ok it sounded cool but i decided to change my exauhst to a magnaflow cat back with magnaflow Cat the cost on that was $1,100 big bill and worth every penny it must have added 20 bhp. And last I installed a Venom 400 Power chip its a good add on you can flick a switch and go back to stock settings and it is easy to hook up i recomend re wireing the chip so the wires can be run in a nice location and make it look good. The chip only cost $300 witch brang me just under 1,700 bucks I ran it on the dyno befour the mods and it ran 144 HP at the wheels and after the mods it ran a good set of numbers 223 HP at the wheels now my car is nice and fast it does the 1/4 mile in the mid 12's next is suspention and brake kits a throttle body spacer is a good idea too and tires and rims [/B]

Last edited by GDP; 02-22-2009 at 04:03 PM. Reason: Font too big

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Unread 02-22-2009, 04:04 PM   #2
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I changed the font in your post, its was obnoxiously big. Also very nice results, do you have the dyno sheets you can show us?
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Unread 02-22-2009, 04:31 PM   #3
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i dont have the sheets any more my car info and recipts went missing when i left my EX but i can throw it back on the dyno at work and post the results i was shocked to see 223 hp with sutch light mods the venom power chip was a good 60hp gain and the air / exhaust was around 19hp gain

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Unread 02-22-2009, 04:53 PM   #4
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So you're saying that you added a CAI, a catback exhaust, and a "chipped" ECU and you gained 79hp out of your 2.2l 4 cyl engine?

I don't think I'd believe that even with a dyno sheet. And I don't think the cavalier is putting 144 to the wheels in stock form either.

200+ hp and 12 sec 1/4's IS possible from a cavalier, I just doubt that it is possible with the modifications you listed.

Quote:
A new 2.2-liter, DOHC, 16-valve, "Ecotec" four-cylinder engine appeared in the Cavalier for the first time during the 2002 model year. While base Cavaliers continued with the ancient OHV 2.2-liter four and the Z24 still had the 2.4-liter unit, the 140-hp Ecotec was a clear improvement over any previous Cavalier power plant in terms of overall drivability and refinement. The 2.4-liter engine was dropped in 2003.
http://www.edmunds.com/chevrolet/cavalier/review.html

A "Chip" giving gains of 60hp over stock says to me either the designers of the vehicle were very bad at tuning, or the dyno you used was a very high reading model. Gains of 20hp over stock would be much more realistic for a properly tuned vehicle.

Your altitude, ambient air temps, and the model of dyno used can all influence what a vehicle reads. Some dyno's read high, some read low.

For example, a completely stock Grand Cherokee 4x4 with the 4.0 on a dyno showed 210hp and 250lb-ft of torque at the wheels in one town, whereas it showed 160hp and 210lb-ft of torque in another. That's quite a bit of difference from the same vehicle.
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Unread 02-22-2009, 09:41 PM   #5
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my "144" hp Focus only puts like 110 to the wheels if I read right.
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Unread 02-22-2009, 10:06 PM   #6
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Quote:
So you're saying that you added a CAI, a catback exhaust, and a "chipped" ECU and you gained 79hp out of your 2.2l 4 cyl engine?

I don't think I'd believe that even with a dyno sheet. And I don't think the cavalier is putting 144 to the wheels in stock form either.

200+ hp and 12 sec 1/4's IS possible from a cavalier, I just doubt that it is possible with the modifications you listed.
I do believe 144 is probably accurate for this engine hell my Quad 2.4L stock puts out 155hp and 150flbs. The Ecotec is a great motor Gm corrected everything they got wrong with the Quad's when they designed the Ecotec series the stock block and head have been tested mutliple times well over 1500whp(by GM hell ever watch that cheesy show Truck U on speed the slinky gay acting guy is GM sponsored running a front wheel drive drag car with a eco tech at 1532HP). But a 79HP gain is completly unrealistic with the mods listed may be 35hp. Hell I know guys running these motors blown no internals barely seeing 250hp.

Gm under tunes the hell out of everything especially the Ecotec it's there version of the old 350 chevy motors under rated but capable of big things.
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Unread 02-22-2009, 11:52 PM   #7
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Quote:
Originally Posted by lautinjr View Post
I do believe 144 is probably accurate for this engine hell my Quad 2.4L stock puts out 155hp and 150flbs. The Ecotec is a great motor Gm corrected everything they got wrong with the Quad's when they designed the Ecotec series the stock block and head have been tested mutliple times well over 1500whp(by GM hell ever watch that cheesy show Truck U on speed the slinky gay acting guy is GM sponsored running a front wheel drive drag car with a eco tech at 1532HP). But a 79HP gain is completly unrealistic with the mods listed may be 35hp. Hell I know guys running these motors blown no internals barely seeing 250hp.

Gm under tunes the hell out of everything especially the Ecotec it's there version of the old 350 chevy motors under rated but capable of big things.
I understand that some manufacturers underrate engines, but even if the 2.2 was actually running 160hp @ the crank stock with a 15% drivetrain loss it would be only putting down 136 at the wheels.

All I was trying to say is that it's improbable, not impossible to gain 79hp out of those modifications on said engine. On a highly restrictive engine I'm sure you could see gains of 50+hp just for letting it breathe better with a different air filter and exhaust, but I don't think this is the case.
(I may be wrong )

Remember, more air + more fuel = more power (generally)

You guys also didn't see that he made another account to curse at GDP for changing his post, originally leading me to believe that he was just throwing numbers out there and got angry when GDP asked for a dyno sheet or some proof.

And again, I could just be having an off day and misunderstanding him. That happens sometimes...
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Unread 02-23-2009, 12:01 AM   #8
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Speed i'm not arguing against your piont at all like I stated in my post 39 maybe 79 hard to believe. But come on I had to defend the Cavy some since i'm currently building one.
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Unread 02-23-2009, 09:00 AM   #9
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Actually I dont think that was him, I made the mistake of posting a link to this post on another car forum full of immature people.

Quote:
Originally Posted by Speed_Demon View Post
I understand that some manufacturers underrate engines, but even if the 2.2 was actually running 160hp @ the crank stock with a 15% drivetrain loss it would be only putting down 136 at the wheels.

All I was trying to say is that it's improbable, not impossible to gain 79hp out of those modifications on said engine. On a highly restrictive engine I'm sure you could see gains of 50+hp just for letting it breathe better with a different air filter and exhaust, but I don't think this is the case.
(I may be wrong )

Remember, more air + more fuel = more power (generally)

You guys also didn't see that he made another account to curse at GDP for changing his post, originally leading me to believe that he was just throwing numbers out there and got angry when GDP asked for a dyno sheet or some proof.

And again, I could just be having an off day and misunderstanding him. That happens sometimes...
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Unread 02-23-2009, 09:59 PM   #10
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Haha, I'm glad someone else answered because I read that original post and I was like "What the... I'll have some of what this guy is smoking" LOL

You are not going to get numbers like that with basic boltons, it would take force induction, nitrous (and your engine going bye bye shortly) or some major engine upgrades to make that kind of power. I don't really know that a Cavaliar can go all motor (stock bottom end) and even get those numbers without FI.

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