Question about tuning and nitrous.

Solus · 06-18-2009, 02:08 AM

Lets say someone wanted to get the whole bolt on setup (I/H/E, hfc or test pipes, pulleys, short throw) and an oil cooler and short throw. But then wanted to add.. lets say a 50 or 100 shot to it. Then have it tuned. After the tune.. if you take the bottle off how bad would it F*** your setup?

One_Quick_Z · 06-18-2009, 03:03 AM

Not bad at all if you went with the osiris uprev tune becuase you can get multiple maps and switch them Via cruise control switches

If you went with another tune/reflash yes you would want to get it retuned for optimum performance.

DAN

Solus · 06-18-2009, 03:12 AM

I dont think I am conveying what I am getting at. If I get it tuned to run on the nitrous.. then take the bottle off.. is it going to mess it up or cause power problems?

turbo8765 · 06-18-2009, 08:18 AM

You would lose a good bit of power if you ran a nitrous tune with no nitrous. Nitrous raises cylinder pressure significantly requiring a decrease in timing. The more nitrous the more you need to retard the timing. If you ran with no nitrous and your timing retarded there would be a noticeable decrease in power.

The fix for this is to have a device that retards the timing when you spray the nitrous. Don't know of a specific device compatible with the 370, but I'm sure you can find something.

kannibul · 06-18-2009, 08:46 AM

With an 11:1 compression, running nitrous, IMO, would be suicide for the engine.

I dunno...

turbo8765 · 06-18-2009, 09:53 AM

Factory compression ratios have been creaping up over the last ten years. All along the way, people have said that you won't be able to use nitrous or forced induction with the higher ratios but they always do.

I don't know if this motor will handle nitrous or not, but the compression ratio alone dosen't eliminate that capability.

kannibul · 06-18-2009, 09:58 AM

Quote:

Originally Posted by turbo8765

Factory compression ratios have been creaping up over the last ten years. All along the way, people have said that you won't be able to use nitrous or forced induction with the higher ratios but they always do.

I don't know if this motor will handle nitrous or not, but the compression ratio alone dosen't eliminate that capability.

I dunno, I guess I don't see the need, or that the risk outweights the benefit.

I mean, I enjoy performance, but, I've heard of too many people having problems with nitrous, not including having their cars impounded...

MightyBobo · 06-18-2009, 10:10 AM

Quote:

Originally Posted by kannibul

I dunno, I guess I don't see the need, or that the risk outweights the benefit.

I mean, I enjoy performance, but, I've heard of too many people having problems with nitrous, not including having their cars impounded...

Nitrous can be run extremely safely as long as its done properly.

Solus · 06-18-2009, 01:21 PM

^^ what he said. I know a lot of people are pretty anti nitrous but from what I have read this engine should be able to hold a 50-75 shot just fine.. maybe 100. I am honestly not that concerned with the risk, because as bobo said it can be run quite safely. I just need to see about how to set it up so I can sometimes run it and other times not.

One_Quick_Z · 06-18-2009, 02:26 PM

I was having a Zex Kit installed on my 350Z and then went a different route and bought the 370Z Now I have a brand new kit just sitting in the box it has everything to run it safe window switch/purge/ blowdown tube pressure gauges/ switch pannel bottle heater/ Everything you would ever need and I never got the install finished at GRD in Villapark IL lol

DAN

semtex · 06-18-2009, 04:40 PM

Quote:

Originally Posted by Solus

^^ what he said. I know a lot of people are pretty anti nitrous but from what I have read this engine should be able to hold a 50-75 shot just fine.. maybe 100. I am honestly not that concerned with the risk, because as bobo said it can be run quite safely. I just need to see about how to set it up so I can sometimes run it and other times not.

Solus, I used to run nitrous in my Maxima. We tuned it for when the nitrous was not in use. When the nitrous kicks in, the ECU is supposed to automatically retard the timing (i.e., no tune needed to retard the timing). Could further gains have been attained while nitrous was on with a 'nitrous-on' ECU map? Maybe. But given how infrequently the nitrous was on, relative to when it was off, it just wasn't worth the hassle. Plus, it was plenty quick enough when the nitrous kicked in. So, FWIW, that's how I did it on my Maxima, and it ran both reliably as well as with good results. Hope that helps.

Solus · 06-18-2009, 05:02 PM

Semtex- Thanks bro, I was under the impression it would have to be tuned for the nitrous... hmmm I think i have a plan now lol. Just have to see how much it is to set it up

bdanna · 06-19-2009, 07:35 AM

Most typically retard timing 1-1.5 degrees for every 50 hp increase you plan on running (assuming you are running a wet system) with nitrous. That's the only tuning change you would need if you went with nitrous. If you took the bottle out, your car will still run fine, but you'd be leaving a little bit of hp on the table since your timing is retarded with the new tune compared to the stock tune. Maybe 10 hp or so you'd be giving up for a 50 shot and up to 15-20 hp for a 100 shot. Driveability would not be impacted at all.

Like others have said, nitrous is safe if done right.

K20A2_S · 06-19-2009, 09:19 AM

Quote:

Originally Posted by kannibul

With an 11:1 compression, running nitrous, IMO, would be suicide for the engine.

I dunno...

For the uneducated in Nitrous yes.

Ask the guys over @ CLUB RSX running a supercharer+nitrous on their 11.0 compression K20's..............it's all in the tuning.......even though that's a MAP engine, it's the same concept....

Colder plugs, retard timing, and if the tuning device has it, fail safe features for lean cuts and things of that sort.

kannibul · 06-19-2009, 10:23 AM

Quote:

Originally Posted by K20A2_S

For the uneducated in Nitrous yes.

Ask the guys over @ CLUB RSX running a supercharer+nitrous on their 11.0 compression K20's..............it's all in the tuning.......even though that's a MAP engine, it's the same concept....

Colder plugs, retard timing, and if the tuning device has it, fail safe features for lean cuts and things of that sort.

Admittadly, I am uneducated w/ nitrous. I've just seen too many vids where someone blows their engine.

06-18-2009, 02:08 AM	#1 (permalink)
Solus Enthusiast Member Join Date: Apr 2009 Location: Jacksonville, NC Posts: 453 Drives: 2009 Nissan 370z Rep Power: 16	Question about tuning and nitrous. Lets say someone wanted to get the whole bolt on setup (I/H/E, hfc or test pipes, pulleys, short throw) and an oil cooler and short throw. But then wanted to add.. lets say a 50 or 100 shot to it. Then have it tuned. After the tune.. if you take the bottle off how bad would it F*** your setup?

06-18-2009, 03:03 AM	#2 (permalink)
One_Quick_Z A True Z Fanatic Join Date: May 2009 Location: Seneca Il Posts: 1,374 Drives: 10 Civic EX Sedan Rep Power: 218	Not bad at all if you went with the osiris uprev tune becuase you can get multiple maps and switch them Via cruise control switches If you went with another tune/reflash yes you would want to get it retuned for optimum performance. DAN __________________ -My BRZ with exhaust will decimate all if we overnight parts from Japan- 10 Civic EX Sedan- Current Daily

06-18-2009, 02:26 PM	#10 (permalink)
One_Quick_Z A True Z Fanatic Join Date: May 2009 Location: Seneca Il Posts: 1,374 Drives: 10 Civic EX Sedan Rep Power: 218	I was having a Zex Kit installed on my 350Z and then went a different route and bought the 370Z Now I have a brand new kit just sitting in the box it has everything to run it safe window switch/purge/ blowdown tube pressure gauges/ switch pannel bottle heater/ Everything you would ever need and I never got the install finished at GRD in Villapark IL lol DAN __________________ -My BRZ with exhaust will decimate all if we overnight parts from Japan- 10 Civic EX Sedan- Current Daily

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06-18-2009, 03:12 AM	#3 (permalink)
Solus Enthusiast Member Join Date: Apr 2009 Location: Jacksonville, NC Posts: 453 Drives: 2009 Nissan 370z Rep Power: 16	I dont think I am conveying what I am getting at. If I get it tuned to run on the nitrous.. then take the bottle off.. is it going to mess it up or cause power problems?

06-18-2009, 08:18 AM	#4 (permalink)
turbo8765 Base Member Join Date: Jun 2009 Location: Southeast Posts: 11 Drives: M3, considering 370z Rep Power: 15	You would lose a good bit of power if you ran a nitrous tune with no nitrous. Nitrous raises cylinder pressure significantly requiring a decrease in timing. The more nitrous the more you need to retard the timing. If you ran with no nitrous and your timing retarded there would be a noticeable decrease in power. The fix for this is to have a device that retards the timing when you spray the nitrous. Don't know of a specific device compatible with the 370, but I'm sure you can find something.

06-18-2009, 08:46 AM	#5 (permalink)
kannibul A True Z Fanatic Join Date: Jun 2009 Location: Jenks, OK Posts: 2,281 Drives: 370z Touring/Sport Rep Power: 266	With an 11:1 compression, running nitrous, IMO, would be suicide for the engine. I dunno...

06-18-2009, 09:53 AM	#6 (permalink)
turbo8765 Base Member Join Date: Jun 2009 Location: Southeast Posts: 11 Drives: M3, considering 370z Rep Power: 15	Factory compression ratios have been creaping up over the last ten years. All along the way, people have said that you won't be able to use nitrous or forced induction with the higher ratios but they always do. I don't know if this motor will handle nitrous or not, but the compression ratio alone dosen't eliminate that capability.

06-18-2009, 01:21 PM	#9 (permalink)
Solus Enthusiast Member Join Date: Apr 2009 Location: Jacksonville, NC Posts: 453 Drives: 2009 Nissan 370z Rep Power: 16	^^ what he said. I know a lot of people are pretty anti nitrous but from what I have read this engine should be able to hold a 50-75 shot just fine.. maybe 100. I am honestly not that concerned with the risk, because as bobo said it can be run quite safely. I just need to see about how to set it up so I can sometimes run it and other times not.

06-18-2009, 05:02 PM	#12 (permalink)
Solus Enthusiast Member Join Date: Apr 2009 Location: Jacksonville, NC Posts: 453 Drives: 2009 Nissan 370z Rep Power: 16	Semtex- Thanks bro, I was under the impression it would have to be tuned for the nitrous... hmmm I think i have a plan now lol. Just have to see how much it is to set it up

06-19-2009, 07:35 AM	#13 (permalink)
bdanna Base Member Join Date: Apr 2009 Location: Houston, Texas Age: 59 Posts: 13 Drives: 370Z, 03 Evo Rep Power: 16	Most typically retard timing 1-1.5 degrees for every 50 hp increase you plan on running (assuming you are running a wet system) with nitrous. That's the only tuning change you would need if you went with nitrous. If you took the bottle out, your car will still run fine, but you'd be leaving a little bit of hp on the table since your timing is retarded with the new tune compared to the stock tune. Maybe 10 hp or so you'd be giving up for a 50 shot and up to 15-20 hp for a 100 shot. Driveability would not be impacted at all. Like others have said, nitrous is safe if done right.