Retarded timing

[ZX2guy19]

How much should the timing be retarded for a 50 shot of nitrous? I am putting my tune together for Don Lasota and need to know how much it should be changed for a 50 shot.

[ZX2guy19]

giggity giggity bump

[2001zincsr]

rule of thumb: 2 degrees per 50hp increments, but you could probably run stock timing just fine.

Next time you talk to Don ask him if he's able to tune the pcm for switching to a return system. Thanks

[ZX2guy19]

shoot him an email, he is generally pretty fast.

So is that 50hp just for nitrous or 50hp for everything. I have i/h/e/udp so that is probably close to 30 hp (crank)

Should it just be a 2 degree advance then? Btw, I know to run copper plugs as well.

[2001zincsr]

retard the timing 2 degrees per every 50 shot increment of nitrous.

[ZX2guy19]

Ok sweet. Now will that affect daily driving since I won't be driving around spraying non stop? Lol

In other words...can I leave that tune on with the 2 degree timing advance or will I have to switch it on and off every time I spray.

[TheGhostInTheMachine]

You don't need to retard timing at all if you're running the stock ECU. You'll be fine on a 50 shot and 91+ octane fuel.

[ZX2guy19]

Are you 100% positive on that? I thought the same thing but Fast thinks otherwise.

[S/R]

what Vit is trying to say is that the stock EEC-V will learn and pull the timing on its own. but dropping a few degrees would help prevent any chance of detonation though.

and yeah, 2 degrees for every 50 no the gas is the general rule of thumb.

it really depends on the set up though. depending on were the nitrous is injected in to the intake tract. Dry kits usually shoot upstream of the MAF so the MAf reads the extra air and lower temp and the EEC dumps fuel and pulls timing. with a big shot wet kit alternate means of timing such as a chip or a boost retard box for better tuning.

[ZX2guy19]

I think I will retard the timing 2 degrees for the wet 50 shot.

Now the final question is can I run on that tune all the time or will I have to keep my xcal with me and switch every time ricer boy revs at me and I want to spray.

[S/R]

be prepared for shitty gas mileage and sluggish acceleration while not spraying.

[ZX2guy19]

Fuck. Maybe I shouldn't retard the timing then. This is my DD with a 35 mile/day commute

[S/R]

it'll be fine on a 50 shot. like Vit was trying to state with the stock EEC you shouldnt need to pull the timing it'll do it on its own when the reads the extra O2 in the exhaust.

[ZX2guy19]

I'm only running one o2 sensor.

[S/R]

yeah, it only reads off one. the other o2 sensor is just for the cat. if the two sensors read too far apart the it throws a code saying the cat is bad.

[ZX2guy19]

Ok sweet, so for the last time just to 100% make sure.

Retard or not? for a 50 shot.

[Chuck Norris]

http://i180.photobucket.com/albums/x89/ulises86/RETARDED.jpg

[krux]

I run 55 shot on stock tune. Its fine

[Gunslinger]

alright chuck Norris, that really aint nessesary. get the hell on with the thread jacking trying to score funnys ha ha's and shit. the man is asking an legit question, not to mention he got severl diffrent answers. nothing wrong with wanting to be clear on said subject. running nitrious could mess up your car bad if not done right. you would be the same way if all your hard earned cash was on the line.
however,, on a diffrent note. the Vit has spoken, obey the Vit

[2001zincsr]

If you have a multi-tune switch then have a tune for spraying and a tune for when you're off the bottle. If not then the stock timing SHOULD be fine. I didnt really notice any difference performance wise with a 2 degree retard tune.

[TheGhostInTheMachine]

I know the stock timing will be fine. The stock timing is good for 87 octane... I mean jeez, you're moving to 91+ octane for spray... you can actually run more than stock timing on a 50 shot if you wanted to. I've known people who turn on POTs and spray a 55 shot. lol

[DaviDawg]

so i guess 91 octane wouldnt be needed for a 50 shot unless you want to be cautious, right?

[krux]

If i wanted to..I know i could run 65 shot with race gas if i was worried. Ive actually done it and my motor is still fine.

[TheGhostInTheMachine]

so i guess 91 octane wouldnt be needed for a 50 shot unless you want to be cautious, right?


You must run premium octane if you don't want to pre-ignite and blow up your engine.

[Escort Pimp]

yeah, it only reads off one. the other o2 sensor is just for the cat. if the two sensors read too far apart the it throws a code saying the cat is bad.
Actually the ecu goes into open loop at wot, which means the 02 sensor is ignored.

[TheGhostInTheMachine]

Actually the ecu goes into closed loop at wot, which means the 02 sensor is ignored.


It goes into open loop at WOT. Closed loop is part throttle and cruise, and during this it uses the O2 sensor.

[Escort Pimp]

oops, yeah I meant open loop

[DaviDawg]

You must run premium octane if you don't want to pre-ignite and blow up your engine.


got it

[Gunslinger]

heres my question, what about high milage engines ? 90,000 range ? although well maintained
is it a bad idea to run a 50 shot on these ? or are my rings gonna get fried ? (giggle giggle)
no seriously though , what do ya think ?

[ZX2guy19]

I'm at 103k and I'm doing it.

[joshalabama]

I thought you bought the x3, can you not flash diff. tunes to your need?

[ZX2Fast]

I don't know, you can screw up a wet dream. Maybe running -2 would work out since your car seems to break for now reason. Although, it works fine for me so maybe you should only spray when I'm in the car.

[S/R]

Valid point