First test of the nitrous and I ran into a problem..

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Sep 18, 2007 | 08:21 PM

12secLS1

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First test of the nitrous and I ran into a problem..

I installed a 125hp jet for the first test and it looked like it was going to work. The first run I brought it up to 3K rpm in 2nd gear and hit it. It blew away the tires right away so I let off. Then I took it up to 3K rpm in 3rd and tried it again. This time was awesome, tons of torque and it seemed to run real smooth.

Now the problem. When I was coming back, I did the same run in 3rd gear and it seemed to surge real bad. 3-4K rpm it pulled real hard, then it died off, then it seemed to kick in again at about 5K rpm.

To give you more details about my setup: Single nozzle and I rotated the MAF clockwise so it would hit the wires better. Any problem with doing that?
What do you think is wrong?

Sep 18, 2007 | 09:22 PM

SchultzLT1

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MAY have something to do with the MAF. The best advice I can give is check the bottle pressure, and if you feel yourself losing that kick let off the nitrous.... There is a chance your MAF isn't see'in the nitrous and it is dumping lean into your motor.

Sorry, wish I could help more

Sep 18, 2007 | 10:04 PM

GregWS6&z28

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assume it's a dry shot?

Sep 18, 2007 | 10:06 PM

12secLS1

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Yes, a ZEX dry shot.

Bottle was full and heater had been on for a while.

Sep 18, 2007 | 11:20 PM

12secLS1

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Anyone have any ideas?

Sep 19, 2007 | 12:33 AM

99DWPTA

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isnt a 125 shot of dry a little big far a stock tune... or is it tuned???

Sep 19, 2007 | 08:34 AM

SchultzLT1

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personally, anything over 100 I would go wet. I'm content with my Dry 100 though.

Go out and try it again, it may have been a one time thing, or take the nozzle out, shoot it into the air, and make sure your getting a steady shot out of it

and do you have a 99 or 00? Those only have little baby 26# injectors.

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Sep 19, 2007 | 10:40 AM

12secLS1

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I had the bottle filled right before I installed it and it weighs a lot more than it was when it was empty so I don't think there is a problem there. And I checked for leaks but I teflon taped all the connections so nothing was leaking out.

The car was tuned (it's an '01) and the timing is retarted 4 degrees. It has all bolt ons but heads, w/ stock internals. Should I be aiming the nozzle at the 2 MAF wires on one side, or in the middle of all 3 of them? The nozzle is pretty close to the MAF.

Sep 19, 2007 | 11:00 AM

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HPT BANDIT

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whats your a/f with the dry shot?

Sep 19, 2007 | 11:02 AM

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Bird_Of_Prey

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Move the nozzle back from the MAF. You will have freezing problems if its too close. I've frozen the MAF on my V6 before. It was a pretty similar experiance to what you have described.

Sep 19, 2007 | 12:04 PM

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12secLS1

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Quote:

Originally Posted by HPT BANDIT

whats your a/f with the dry shot?

Haven't had the A/F checked with the nitrous yet, just finished installing it yesterday. What's the easiest/cheapest way to get it checked? Put it on a dyno?

Sep 19, 2007 | 04:18 PM

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12secLS1

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Finally some good news: I tried it a few times today and it worked great. Maybe the computer just had to get used to it or something because it really hauls *** now. 11s here I come

Sep 19, 2007 | 04:22 PM

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Ponch

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so what is your A/F ratio?

Sep 19, 2007 | 04:27 PM

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12secLS1

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Quote:

Originally Posted by 12secLS1

Haven't had the A/F checked with the nitrous yet, just finished installing it yesterday. What's the easiest/cheapest way to get it checked? Put it on a dyno?

^^^^^^

Sep 19, 2007 | 04:44 PM

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Ping King

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bottle may have been full but what was your bottle pressure?

Sep 19, 2007 | 04:56 PM

#17

12secLS1

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I don't know, I don't have a guage. But the heater had been on for ~25mins before I used it and it was hot. But it works now so all is good.

Sep 19, 2007 | 08:03 PM

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HPT BANDIT

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You could go to a dyno with a wideband and have it done but I would just buy a wideband. Not knowing what your A/F is is just asking for trouble. I wouldn't spray anymore untill you get it checked.