I'm wondering if anyone has tried using Water Methyl Alcohol Injection on a Naturally Aspirated 2.4L VVT ECOTEC. It seems to me that it should work without a special tune.... provide additional HP due to richer fuel ratio, denser mix, and increased expansion rate of water (steam). AIS (a supporting vendor) has a web page http://www.alcoholinjectionsystems.c...c25/index.html supporting the application.

Anyone tried it?

 

nah wouldn't be worth it unless you were s/c or turbo.

 

I believe the cost vs. benefit ratio is subjective... give me an idea how much HP one can achieve with $$$ and ONE HOUR installation, I'll decide if its worth it. Water - methyl injection MAY be easier and more cost effective than say header, down pipe, cat-back which seems very popular, but apparently everyone wants to throw money and time at more difficult solutions.... but hey, you want to turbo or S/C your 2.4, you're throwing a lot more time and money into your ride than what you will with water methyl injection to start with and you'll wind up adding it anyway if you go Forced Induction. I'm just looking for someone who tried water methyl injection on a LE5 before adding a turbo or S/C.......

 

I can't think why anyone would have tried it on an N/A car. The reason for meth injection is to cool the intake charge and prevent detonation buy adding effective octane to the fuel mixture. An N/A car shouldnt be detonating to start with and to cool the intake charge would just be easier to get a cold air intake. It is a different idea but I dont think anybody would have ever tried it on an N/A car. Maybe you could be a ground breaker, get the kit, do an install, and post up the results?

 

Then, as far as I know, no one has meth injection on their N/A LE5. I guess it could be beneficial because you would be able to run massive amounts of timing. On an otherwise stock LE5- I'm going to go out on a limb and say you may net 10-15whp. I read somewhere that the gains are roughly 5-10% on naturally aspirated motors, and 10-20% on a forced induction motor. It all depends on the tune as well.

 

can you tune?

do you have over 10.0:1 compression?

do you have a wideband?

do you have the ability to monitor things?

if ANY of these are no. you answered the question.

 

Back in the day a water injection kit was sold for carburated cars that had a switch hooked to the secondary's on the 4 barrel so when you floored it it sprayed a jet of water into the carb. The benifits were less fuel used at WOT and it also cleans the crap out of the engine like no tomorrow! It would also increase HP cause of the whole water not being able to be compressed thing.

The kit sold thru the late 60's till about the late 70's and then kinda fizzeled away. Not a half bad idea and it may be worth looking into.

 

Im going to look into this. Once I get a better understanding of tuning I will definitely see if this is a legitimate mod for the 2.4. A possible 10% increase in power definitely seems worth the money to me.

 

Those were the days when I was the age of most of the people here.... and I was doing then what most are doing now.... trying to find more ponys under my hood so my car would be faster than the other guy's, street or strip. Oldsmobile's had "Rocket Juice" and it was common to see windshield wipers waving on some cars at the strip (they were spraying inside the air cleaner)... I believe there's at least 15 HP (10 percent increase) waiting for an untuned NA LE5 using a AIS Trunk Stage 2... that'd be about $40 per PONY and 4 minutes install time per PONY.... lets see $600 for water meth injection or $1000 for GMPP Exhaust ? Kind of a no brainer isn't it?

 

So with the Jet Chip https://www.cobaltss.net/forums/2-4l-le5-performance-tech-46/jet-chip-out-ready-orders-93607/
now available in STAGE 2 for the Cobalt 2.4 NA, it seems like a MAF driven Stage 2 AIS would be the thing to do to bring down IATs and wring out the potential of the LE5.... 200 HP with bolt ons??

 

I'm gonna have to vote "NO" on a Jet Chip. To me honestly all it sounds like is an Ebey resister. Now having been in the car building and modding world for better then 20 tears now I know Jet is a reputable company, however our ECU's are NOT lke the old EBD and EBDII of years ago and as far as I know there is no chip in it at all! Its a sealed and is falshed itself,meaning no chip. Thats why and how HPT works. For the HIGH asking price and relitivly low expected hp gain of 10 to maybe 15 at the VERY most and then Jet saying you need a hi flow exhaust, intake, larger TB, header TB spacer I'd say your actualy waaay better off ust getting someone with HPT to tune your car.

 

Does anyone know the difference you would see between the fender mounted and the trunk mounted? Why is the trunk mounted more expensive? Would it be better to get the trunk mounted?

 

I'd have to guess cause the lines need to go further and the tank may be larger.

 

https://www.cobaltss.net/forums/2-4l-le5-performance-tech-46/2008-2-4-tune-98888/
wants a solution for a 2008 NA LE5... why not??

 

the 08 LE5 uses an e37 ecu. No tuning support from HPTuners as of yet.

 

Isn't it an E67 ?

See the following extract from a GM press release:

An all-new, engine control module (E67). The Ecotec 2.4-liter is one of the first GM engines to employ this sophisticated new controller that leverages 32-bit processing power. It incorporates 32 megabytes of burst flash memory and 32 kilobytes of external RAM and 36 kilobytes of internal RAM, as well as a high-speed CAN bus to deliver optimal networking capability.
All engine-related sensors for the Ecotec 2.4-liter are digital rather than analog. “Digital sensors are more accurate and provide improved reliability,” said Subhedar of this emerging trend in engine-monitoring technology. The digital sensors improve information processing and reliability, which in turn means more-efficient engine performance.

See http://www.csm-gh.com/install.pdf for pictures.