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Discussion Starter #1
My friend is installing his Zex Nitrous kit on his Cobalt. I haven't looked at the car yet to find the fuel regulator, but I would imagine it's on the rail like most of the GM cars. Would this be a fair assumption? Also we need a wiring diagram for the TPS to hook up the Nitrous management unit. I have a meter and could ohm it out if need be, but if anyone has already done this install then your help would be greatly appreciated. Thanks.
 

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Discussion Starter #2
No takers yet? I guess we'll have the first juiced Cobalt SS on this site! I have finals this week, so I'll probably go ohm out his TPS on Friday before we head out to the track.
 

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Well good luck with that, how big of a shot are yall goin w/ I thought about nitrous but honestly Im terrified of destroyin a new car so I dont know what I'll do.
 

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Discussion Starter #4
Only a 50 shot, not too big in the beginning. We didn't install it yet because I wanted to take a look at the stock tune calibration. I spent about 2 hours last night trying to my LS1 scan tool and tuning software to mate with the Cobalt. We were successful, but it doesn't scan normally. Some of the data was inaccurate I believe, or maybe the file was corrupted when I converted it to Excel. But we were able to scan and log the important stuff like Timing, O2 voltage, IAT, ECT, RPM, MAP, MAF, etc. We'll be heading to the track to do more logging tonight. Also I didn't see a MAF sensor under the hood, so we decided against the nitrous for the time being. That was also because it appears that the car is using a returnless fuel system with a regulator without a vacuum port, or I didn't look good enough. But last night my main concern was being able log engine vitals before we make any big performance mods. I have to do more research on the type of EFI in these cars, I'm so used to playing with my LS1 that I've been spoiled!
 

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Sounds like you know your stuff! I'll be questionin you aout your experiences w/ the Cobalt, if I do decide to get one, cant make up my mind between SS's (Brand new Cobalt SS or look for an 02 Camaro SS)
 

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Discussion Starter #6
There are both good cars, the question is how fast do you REALLY want to go! The LS1 is a wicked engine that responds very well to mods. I love my LS1 and wouldn't give it up for anything. I'm running low 12s and still get 26-28mpg on the highway. I'm in the middle of installing Cold Fusion Nitrous Kit on my Camaro, and if I don't lose traction I should be able to run a really high 10. If not, I'll be happy with a low 11 sec pass on the juice.
The Cobalt SS is an awesome car. It definitely has a lot of potential. 12s shouldn't be a problem with this platform. The only set back right now is the lack of tuning software for the Ecotec. All of GM's other engine platforms including the Duramax has a tuner or tuning software available for it. The aftermarket just completely forgot about the 4cyl GM fans. Greddy has a piggyback ECU that some guys are running on boosted 4cyl, so I'm going to look into that if nothing comes on the market soon.
 

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Discussion Starter #8
Pulley, Direct Flo Lid, Ported Throttle Body, LS6 MAF, Ram Air, Transgo Shift Kit, TCI 3500 Converter, Lakewood LCAs, Mickey Thompson Drag Radials, Hooker Cat Back exhaust. Best E.T to date- [email protected]
 

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DarricksZ28 said:
My friend is installing his Zex Nitrous kit on his Cobalt. I haven't looked at the car yet to find the fuel regulator, but I would imagine it's on the rail like most of the GM cars. Would this be a fair assumption? Also we need a wiring diagram for the TPS to hook up the Nitrous management unit. I have a meter and could ohm it out if need be, but if anyone has already done this install then your help would be greatly appreciated. Thanks.
I don't think there is a TPS. It's drive by wire, so no need for a sensor since the computer already knows the throttle position, cause it's actuating the throttle blade :)
 

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Hmm?!! Good point. Im not a fan of the throttle by wire though. I dont like much how the throttle "feels".
 

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Discussion Starter #12
Yea, I was looking at that. But there still has to be a varistor in there unless they're using digital sensors or optics sensors to "see" the position of the throttle blade, but I don't know. We decided against the nitrous for right now until I can verify everything will work out. The cure for no TPS is a "juice button". Just wire in a momentary switch to activate the nitrous on demand instead of using the signal off of the TPS. That's the easy part of the nitrous install. The hard part is decided whether or not the MAF will add the required amount of fuel when spraying the dry shot. I'm thinking his Zex kit might not be the best choice for this application. We're in unchartered waters right now.
 

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And that my good man is what makes you a pioneer! Hey you might be runnin into a few probs but you could sure learn me some stuff! <==Country talk! I dont really talk like that.
 

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Discussion Starter #14
LOL. I'm still doing a lot of research and looking over the data I logged Friday night, but I'll keep you guys informed on our progress. I've got about 6 or 7 plans that will possibly launch the Cobalt and Red Line into the 12 sec zone. 13s are definitely feasible.
 

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sweet, another LS1 f-body owner! I think you'd be hard pressed to reach the 10's with your setup, but it all depends on how much you want to spray it with. i say spray the world at it!

anyways, i'd love to see what happens on the Css on the spray! One of the better things to look into would be the wideband o2 into the exhaust. kinda get an accurate reading and know to let off just in case something's very lean.

Chris
 

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Do you still need wiring info?

Let me know what you need, and I'll tell you which cavities in which connectors.
 

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Discussion Starter #17
Yes sir I do. I went to NY for a week and kind of put everything on hold, but now I'm back and ready to continue. If you could post the pin layout that would be awesome.
 

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Discussion Starter #18
Autobiz said:
sweet, another LS1 f-body owner! I think you'd be hard pressed to reach the 10's with your setup, but it all depends on how much you want to spray it with. i say spray the world at it!

anyways, i'd love to see what happens on the Css on the spray! One of the better things to look into would be the wideband o2 into the exhaust. kinda get an accurate reading and know to let off just in case something's very lean.

Chris
What's up. Your setup looks hardcore! I've got the LM-1 on the way, along with headers and ORY. I plan on spraying 175 shot. The only thing left to get is the fuel pump and the bottle heater. Oh, I have to buy a new set of Mickey Ts, they're pretty much done. Any numbers yet? What do you mean by Css? My best is a 12.32 with several 35s and 36s. If I spray out the gate and she hooks I hope to get a low low 11, but I'm praying for that 10 sec slip. Soon after that I'll be putting a 12 bolt in it. I'm on shaky ground now, but I have the 2.73 gear so I'm hoping it'll last long enough for me to scrounge up the cash.
 

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DarricksZ28 said:
Yes sir I do. I went to NY for a week and kind of put everything on hold, but now I'm back and ready to continue. If you could post the pin layout that would be awesome.
Check your private messages.
 
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