Nitrous Oxide N20

35 shot. tune needed?

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Old May 23, 2014 | 12:48 AM
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35 shot. tune needed?

Found a good deal on a lightly used dynotune setup. Was thinking about running just a small 35 shot. Do I need to get retuned and pull some timing? Or should I be ok? Planning on spraying pre blower. Current mods are 2.8, 60s and zzp tune. Soon to have dual pass and option b as soon as my gaskets get here.
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Old May 23, 2014 | 07:33 AM
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Is it wet?
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Old May 23, 2014 | 08:21 AM
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when would you spray after the blower? And all nitrous should be tuned. Wet or dry. It's your risk of blowing **** up then.
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Old May 23, 2014 | 08:24 AM
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You can spray post blower too.
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Old May 23, 2014 | 08:33 AM
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interesting, either way, wet or dry, you should tune for nitrous.
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Old May 23, 2014 | 08:40 AM
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Post blower is going to be more of a direct shot.
Pre blowers is going to put the No2 into the SC and there are debates on if this is good for the rotor coating (same goes for meth). It is also said that it will cool IAT2 temps some as well.

Regardless, I have always used a minimum of two nozzles and had them postioned in a way that the no2 had a straight path into the cyliners. On an LSJ I would do post blower with a nozzle on the 1-2 side and another on the 3-4 so there is little risk of cyliner pooling.
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Old May 23, 2014 | 08:43 AM
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a lot of effort for just a 35 shot
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Old May 23, 2014 | 08:51 AM
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Originally Posted by redcobalt07
a lot of effort for just a 35 shot
Ive never bothered with a shot that small....
I am only giving my experience and my thoughts.

Personally, OP should run a 50 shot wet
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Old May 23, 2014 | 08:55 AM
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me either, I run a 100 wet shot on my g8 but I have timing pulled for it. I'd be real nervous running nitrous without a tune. Plus, these safe shots, would you even feel a 35 shot?
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Old May 23, 2014 | 09:05 AM
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a 100 shot on a v8 is like a 50 on a 4 cylinder.


A 35, I would imagine you would know, but not really feel it.
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Old May 23, 2014 | 09:07 AM
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I mean a 100 shot is plenty..for now at least. Knocks a solid .9 off in the 1/4
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Old May 23, 2014 | 09:51 AM
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Blackss you have any pics of your nitrous setup?
Ill be doing a 50 shot as well
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Old May 23, 2014 | 09:57 AM
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I don't think he actually has that done.
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Old May 23, 2014 | 10:47 AM
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I dont, not on this car.
Last car I had nitrous on was my sc2.
It blew up because shitty Saturn motor.
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Old May 23, 2014 | 10:48 AM
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nitrous on that kind of a saturn? wow
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Old May 23, 2014 | 10:53 AM
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Originally Posted by redcobalt07
nitrous on that kind of a saturn? wow
One of the motors was supercharged with a genIII eaton.
It blew up too.

Problem with doing any mofications to those cars was the shitty locked PCM. It was all very basic and not tunable. You had to rely on piggy backs, EIC's, or megasquirt SAEMS. But they were cheap, parts are plentiful, and the suspension I ran made it handle like it was on rails. It was quick on on the auto-x course.
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Old May 23, 2014 | 11:02 AM
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ive seen basic lsjs with gm stage 2 + 50shot do some work...not tuned for nitrous either..
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Old May 23, 2014 | 11:17 AM
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Originally Posted by jonathan923
ive seen basic lsjs with gm stage 2 + 50shot do some work...not tuned for nitrous either..
Ive also seen people all over this place say that OEM 42's can do a 2.8 pulley yet I was watching my car run 147% duty cycle on the OEM Stage 2 3.06" pulley.....
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Old May 23, 2014 | 11:19 AM
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Originally Posted by BlackSSstg2
Ive also seen people all over this place say that OEM 42's can do a 2.8 pulley yet I was watching my car run 147% duty cycle on the OEM Stage 2 3.06" pulley.....
with no cooling mods
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Old May 23, 2014 | 11:19 AM
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whats you afr at WOT?
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Old May 23, 2014 | 11:21 AM
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Originally Posted by BlackSSstg2
Ive also seen people all over this place say that OEM 42's can do a 2.8 pulley yet I was watching my car run 147% duty cycle on the OEM Stage 2 3.06" pulley.....
ppl near me want the OEM 42s to work with a 2.7
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Old May 23, 2014 | 11:23 AM
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Originally Posted by redcobalt07
with no cooling mods
With the car completely stock.

Originally Posted by jonathan923
whats you afr at WOT?
When the car was acting like that, the tune was the GM stage 2 flash. AFR at would was rich as GM likes, 10.2-10.4

Originally Posted by ECaulk
ppl near me want the OEM 42s to work with a 2.7
Ive seen it.... face palm

Last edited by blueLNFftw; May 23, 2014 at 11:23 AM. Reason: Automerged Doublepost
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Old May 23, 2014 | 11:39 AM
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Originally Posted by BlackSSstg2
Ive also seen people all over this place say that OEM 42's can do a 2.8 pulley yet I was watching my car run 147% duty cycle on the OEM Stage 2 3.06" pulley.....

did you have clogged injectors ?

u can adjusts the maf hrtz table and pull fuel out of it since your AFR was 10.0 ... that would drop your duty cycle.
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Old May 23, 2014 | 11:44 AM
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Originally Posted by yellowsupercharged06
did you have clogged injectors ?

u can adjusts the maf hrtz table and pull fuel out of it since your AFR was 10.0 ... that would drop your duty cycle.
No.

I did. I got it down to about 125% running a 11.5 AFR at WOT and tuning in the MAF. My whole point was that people do no think about altitudes when they say "GM tune can handle this" or "LSJ can do that." Just because some one or some people do it, doesn't mean its necessarily right for the car. I had people telling me that the duty cycle I was running was fine actually. It all comes down to know what your car is actually doing before you start tossing more stuff at it. Thats why I was logging my car OEM Stage 2.
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Old May 23, 2014 | 11:47 AM
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ahhhh ok lol .... thought u were headed back to tuning 101 for a min. lmao


your pretty much at sea level though dwn there in the sunshine state tho right ?
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