Water Injection Results... dayum!

Wiggles422 said:
That's a big improvement! It's amazing what a little water and ice can do when properly equipped.
im not critisizing him but, isnt he supposed to get 14.5 with 13 psi and a catless exhuast system ?
 
mazdaspdprotege said:
if u look at that 1/4 times thread, i remember ppl doin 14.7 with 9psi and cai
He has admitted to being new to the 1/4 mile. He just posted the times to show that he had an improvement with the same car and same driver only with this mod added.
 
then we should do an aquamist groupbuy! Do you have a link to the exact system you are interested in? If I can know what one we are looking at I will phone them on Monday when I get back from the cottage and see what kind of discount we could get.
 
mazdaspdprotege said:
im not critisizing him but, isnt he supposed to get 14.5 with 13 psi and a catless exhuast system ?

Yeah, I really should be faster. But, I attribute ALOT to my being new to FWD. I raced for about 3 years in an RWD car, and it is sooo much different. Also, these two trips to the track were my first and second trips ever in the MSP. I am just waiting to get home to a nice track in NJ (englishtown) before good numbers get put up- the one here is uber-ghetto. It has two different surfaces that change before I hit second gear.

Here is a reliabilty update- I have been running .85 bar since I have installed the system (whats that, like 12-13 psi?) and I drive like a dick, and the engine still has no troubles. I've said it before, and I'll repeat it- the water/methanol is more for longevity than for performace. I know for a fact that I can maintain a higher boost setting for the life of the car with the methanol injection versus just air alone. Plus, for 250-500 bucks, isn't it worth it to protect your 21,000 dollar vehicle?

I will put my foot right into my mouth if I fry a piston or blow a ring, but I'm betting on the methanol.
 
I dont understand.

1. You had crap times, you say its a driver issue, I say, it was both, check your trap speed, 92MPH!!!!. Thats what I do @ 5psi. At 7psi I was able to do 14.7 @ 94 with a lot of practice and at 10psi the only test I did was 14.5 @ 97.7Mph.

2. So whats the deal with water injection and higher boost if its going to be slower?

3. worst than that...running slower with higher cylinder pressures!! Sure maybe you will not have detonation, but the rods may bend.

What I think about your setup is that you are injecting too much. The balance should be like 15% of the air or up to 25% for high boost. Check that and try again.
 
igdrasil said:
I dont understand.

1. You had crap times, you say its a driver issue, I say, it was both, check your trap speed, 92MPH!!!!. Thats what I do @ 5psi. At 7psi I was able to do 14.7 @ 94 with a lot of practice and at 10psi the only test I did was 14.5 @ 97.7Mph.

2. So whats the deal with water injection and higher boost if its going to be slower?

3. worst than that...running slower with higher cylinder pressures!! Sure maybe you will not have detonation, but the rods may bend.

What I think about your setup is that you are injecting too much. The balance should be like 15% of the air or up to 25% for high boost. Check that and try again.

I don't think you understand. My times are better with the injection than without it. What gives you the impression that I'm slowing down with it? I ran in the mid 15's without it, and in the mid 14's with it.

I also don't think you quite understand drag racing. If you can't get traction, your trap speed will be slower as well, because you will have less distance to get up to speed (because you wasted a bunch of it while spinning). I also don't think you have ever raced at a ghetto track. How could you think it's NOT my fault- I ran a 16 with stock boost and no injection. Our cars are way faster than 16 stock.

My trap speed was in the upper 80's stock. THATS SLOW. But thats also my fault, just like the other times are also my fault. A 14.5 isn't bad for a bad driver. If I was able to go to the track more often, my times would be better and better every time.

So, let's recap- I'm not running slower with higher boost and injection . I'm running far faster than I was stock. The car pulls way harder, but the sad fact is that I just can't manage to prove it with good slips, because I suck at driving FWD. I used to hit 1.9x 60 foot times in my Firebird (V6, not V8), but I can only manage 2.2's and 2.3's in this car, and I just spin all the time.

Don't compare my times to other people's times, compare my times to my other times. You will see a 1.5 second improvement over stock. Thats a huge difference. If I could drive 15.3 stock, then that would be in the 13's. But, I can't, so its not.

P.S. I am running about 17% water to air, and always have been. There's nothing wrong with my setup- only your interpretation of my times.
 
The thing is...you tried 15psi and only gave you 15.1, which is wrong. What was the trap speed?

something is def wrong...you have LSD and the grip should be good. 2.2 and 2.3 is good, My best ever was 2.40, and thats when I did 14.5. With 2.6+ I did 14.7

The mazdaspeed runs rich enough to need water injection @ WOT. Plus, @170psi of cylinder pressure, knock is not that bad when running a 12:1 of fuel mixture @ moderate levels of boost.

I do run a lot on the tracks, I even have tons of videos.

This is the first time ever the protege5 touches a racetrack @7psi, timeslip and video (stock clutch, slipage between gears, wheelspin in 1st and 2nd gear):

http://igdrasil.web1000.com/15_1run_green.wmv

15_1timeslip2.jpg
 
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OK time for me to chime in here. I have a water injection system from here
www.snowperformance.net is Stage 2 with the variable controller I bought.
I have the tanks setup in the trunk, the lower one with a level switch and an LED on my steering column cover. there is a green light also that lights up when the pump starts. As far as I understand it the water injection doesn't add power itself. The extra power is up to you turning up the boost a little farther. When I run 94 octane from sunoco I run 14psi. The car is faster at 14 and no detonation. I also hooked a pressure gauge into the the line to see what its doing. So far 160psi in the line on the smaller 100 nozzle. I have a 175 nozzle ready to go. I run windshield washer fluid and HEET which is pure methanol. I called snow and that's what they recommended.
I heard about it a while ago after talking to YP5 toronto about water injection.
I read about it here, they don't **** around.
http://www.musclemustangfastfords.com/tech/0407mm_snow/
I read the article and ordered the system.
The happy ending to this story is the power went up so much my clutch started slipping. Then I blew my differential. So now its on a hoist.
 
Oh yes, I don't know where you read that the ice will help. The chemical process of turning water into vapour uses a huge amount of energy, like hundreds of degrees. It takes the energy from the charged air. That is what lowers the intake temp. Any one feel like calling bulls*** they used it in formula 1 in the turbo cars of the 80's. And it worked so well they banned it.
What will help your drag times / mph is drag radials. If you're spinning uncontrollably in first gear, you need to add grip not more HP.
 

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