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Could someone please work on nitrous

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Old May 26, 2009 | 03:51 PM
  #101  
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From: Bellevue WA
Well after my latest AP tune the car is running like a raped ape. A Cobb tuned, modified MazdaSpeed6 could not catch up to me until about 85 mph from a 30mph roll.
Sweeeeeet!
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Old May 28, 2009 | 09:31 AM
  #102  
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so i keep hearing from my friends that have had nitrous on past cars say i must change oil after every nitrous use is that true or how often should i be changing?
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Old May 28, 2009 | 09:36 AM
  #103  
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Originally Posted by RX-8skater
so i keep hearing from my friends that have had nitrous on past cars say i must change oil after every nitrous use is that true or how often should i be changing?
Uh no, your friends are sadly mistaken. Nitrous has no effect on the oil of your vehicle. You can continue to change your oil at 3,000 mile intervals.
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Old May 28, 2009 | 10:35 AM
  #104  
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Originally Posted by Flashwing
Uh no, your friends are sadly mistaken. Nitrous has no effect on the oil of your vehicle. You can continue to change your oil at 3,000 mile intervals.
What if I am using the nitrous non-stop for the 3k miles?
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Old May 28, 2009 | 10:53 AM
  #105  
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Originally Posted by Hoss
What if I am using the nitrous non-stop for the 3k miles?
You won't be...sooner or later you'll have to drive to the autoparts store and get your tank refilled.
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Old May 28, 2009 | 12:29 PM
  #106  
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Originally Posted by Hoss
What if I am using the nitrous non-stop for the 3k miles?

That's one hell of a tank you've got there then..
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Old May 28, 2009 | 06:22 PM
  #107  
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ok thanks i didnt think that it made a diffrence or else that would of been alot of money for oil
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Old Jun 9, 2009 | 06:45 PM
  #108  
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65 no problems but i think i need some upgrades
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Old Jun 9, 2009 | 10:37 PM
  #109  
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From: Bellevue WA
Originally Posted by nelsonrx8
65 no problems but i think i need some upgrades
I think the AP would help.
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Old Jun 11, 2009 | 01:23 PM
  #110  
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i want 65 but noone will tune in mn either they wont do rotary or they wont do accessports do you guys think that mazdamanacs maps would make it ok for A 65?
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Old Jun 11, 2009 | 02:08 PM
  #111  
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From: Bellevue WA
Originally Posted by Charles R. Hill
Let me say this yet again;

The AccessPort does NOT have anything to do with tuning for nitrous use.
And may I ask,, WHY?
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Old Jun 11, 2009 | 02:10 PM
  #112  
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Wouldn't the question be, "Why not?"
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Old Jun 11, 2009 | 02:18 PM
  #113  
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From: Bellevue WA
Ok mf "why not?"
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Old Jun 12, 2009 | 04:07 AM
  #114  
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From: Boosted...
What about the Knock Sensor circuit?

Doesn't the knock sensor cut timing when turned on?
Is it not possible to trigger a knock event for the ECU right before the nitrous comes on?
Somehow delay the nitrous for a fraction of a second while the ECU cuts the timing, then hit the nitrous circuit.
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Old Jun 12, 2009 | 05:12 AM
  #115  
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From: Bellevue WA
The road to glory is paved with blown manifolds.

I beg to differ on the timing issue. I believe that with the last changes to the car, BHR coil kit dwell change to 5ms w/AP. A few timing adjustments. And a bunch of AFR tuning. My car has never run stronger. So get the AP and the BHR coil kit. (Sorry for the plug ).

So don't think because you have these items means that you can drop in a 100 shot.
If you do be sure to take lots of video footage. I want to see it from an outside the car perspective when it blows the manifold. Hella fuel going down an air intake runner.
Now I'm not saying it can't be done, oh contraire. It can be done and it will be done. Slowly and surely.

Does anybody want their 4 Port AT to be faster than a MT 6 Port?

Well that's it. Have fun and bring a fire extinguisher. JK

Originally Posted by Rote8
What about the Knock Sensor circuit?

Doesn't the knock sensor cut timing when turned on?
Is it not possible to trigger a knock event for the ECU right before the nitrous comes on?
Somehow delay the nitrous for a fraction of a second while the ECU cuts the timing, then hit the nitrous circuit.
These are things that have been discussed at length. Something we're looking at with everything else.

Last edited by Easy_E1; Jun 12, 2009 at 05:19 AM.
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Old Jun 12, 2009 | 09:29 AM
  #116  
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Originally Posted by Charles R. Hill
Anyone want to see Easy get his *** whupped BEFORE I bother activating my nitrous system?

Yes, I'll pitch in 5 bucks, just because.
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Old Jun 12, 2009 | 11:34 AM
  #117  
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ok i like the power of the 65 shot but i feel some lag between shifts??????? any help
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Old Jun 12, 2009 | 11:36 AM
  #118  
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its like it takes longer wit the 65 shot then the 55 shot
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Old Jun 12, 2009 | 12:12 PM
  #119  
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From: Bellevue WA
Originally Posted by Charles R. Hill
1) The factory PCM has no trigger device that can be utilized to allow nitrous shots larger than whatever the ignition curve has headroom for. This is what piggybacks are for.
2) The knock sensor does not have a consistently repeatable retard curve or we at BHR would have already utilized it (as MM and I discussed THAT
over a year ago).
3) Once you have optimized your particular tune while in N/A mode, see points 1 and 2.
4) Nitrous systems are tuned separately and independently of the host engine and gross alterations in the nitrous/fuel jet pairings is typically indicative of a less-than-optimally tuned host engine (this assumes a properly designed/installed nitrous system). Thus, toying around with a "75" h.p. nitrous jet paired with a "55" h.p. fuel jet, for example, is an indication that there needs to be more work done on the N/A tune.

Anyone want to see Easy get his *** whupped BEFORE I bother activating my nitrous system?

I totally agree with #4.
Almost.

Oh gee look, the man has mucho grande cahonies. Bring it beeeaaatch!
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Old Jun 13, 2009 | 06:59 PM
  #120  
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longer to kick in it pass the 5.000 rpm ranger before i feel it
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Old Jun 14, 2009 | 03:54 PM
  #121  
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From: minnesota
launching with nitrous.... any help im afraid to do it i havent see anybody talk about it on here i want to no any tricks before i try
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Old Jun 14, 2009 | 04:03 PM
  #122  
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From: minnesota
yea 6 speed
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Old Jun 14, 2009 | 04:16 PM
  #123  
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ok so its basically the same as a normal launch i wasent sure if you have to adjust with the nitrous thanks good to no
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Old Jun 20, 2009 | 09:05 AM
  #124  
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Any suggestion using higher octane race fuel with nitrous? Good or bad?
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Old Jun 20, 2009 | 12:26 PM
  #125  
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so i was messing around on you tube and i saw the bhr nitrous purge on punisher rx8 coming out the side vents charles what was the trick to get the purge to come from there?
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