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View Full Version : Will a 25-50hp nitrous setup help spool?



5mall5nail5
08-07-2007, 08:04 PM
Quick question - I am currently running my holset which I love and can't wait to really open up - I am somewhat worried that at 8.4:1 and 25 psi, I will have more lag than currently.. but how much is unknown - maybe not much at all considering I'll be advancing the timing to compensate, but anyway...

I am adding methanol injection (straight methanol initially), and was wondering if a small shot of nitrous triggered through my standalone to inject right before spool, say 3500 rpm (spool really picks up around 3800 or so) would help get things going?

I think I would run a dry shot considering the standalone will increase fuel injection during spray, so... it could be considered a pseudo wet shot kinda sorta. Anyway, thoughts?

ProjectP
08-07-2007, 08:40 PM
Nitrous will always help spool, might wanna start it a little lower in the rpm range tho, 3200 maybe if you spool around 3800

MrBlonde
08-07-2007, 08:56 PM
Yes it will help. would a single fogger into your plenum be a good simple and effective mod? Trev is the wizard of nitrous .. ask him.

5mall5nail5
08-07-2007, 09:15 PM
Yes it will help. would a single fogger into your plenum be a good simple and effective mod? Trev is the wizard of nitrous .. ask him.

Gonna have to - i can't afford nor can I justify direct port - my motor wasn't built for a high hp load of nitrous - i just want to accelerate some spool and let the turbo do it's thing.

Hmmmm

ProjectP
08-07-2007, 09:38 PM
absolutely no need for direct port for a 50 shot, single nozzle into the plenum is fine

5mall5nail5
08-07-2007, 09:48 PM
Where would one place it? Would a 50 shot spool things up nicely? Nitrous is new to me- I have friends that run it but they run it for power.

good & tight
08-07-2007, 09:49 PM
A dry 50 will do the trick.
Question though, are you going to run the same exhaust manifold? If you went with a better designed exhaust manifold this will spool your turbo quicker.

5mall5nail5
08-07-2007, 09:55 PM
A dry 50 will do the trick.
Question though, are you going to run the same exhaust manifold? If you went with a better designed exhaust manifold this will spool your turbo quicker.

While true it's not in the plans right now. The nearest income is 100% sold on the methanol injection setup, the next is on nitrous (I think) and then saving a few up after that is a GT4294R. I will need to go to a T4 for that, and we'll be making a manifold for that. But, I don't want to change anything like that yet, because I want to get everything in place.

JordanMD88
08-07-2007, 10:02 PM
i would do a single foger into the charge piping right after the intercooler.. really give you a good even mix, in the intake manifold.. also it will keep the air cool that is fresh out of the intercooler

9TimesiX
08-07-2007, 10:05 PM
Why are you going to complicate an already complicated setup by adding nitrous? I mean honestly, lag isn't that big of a deal. If it is, then downshift. The only time I have dealt with a setup that remotely needs nitrous to spool a big turbo is a 1.8L running a big GT4088R or something. Also, lowering your compression ration will have absolutely zero effect on when the turbo spools.
Happy b00sting.

MrBlonde
08-07-2007, 10:36 PM
Why are you going to complicate an already complicated setup by adding nitrous? I mean honestly, lag isn't that big of a deal. If it is, then downshift. The only time I have dealt with a setup that remotely needs nitrous to spool a big turbo is a 1.8L running a big GT4088R or something. Also, lowering your compression ration will have absolutely zero effect on when the turbo spools.
Happy b00sting.
Wrong. Nitrous is a valid way to spool a large turbo off the line on the hit. Lag is a huge deal when your 2.5 litre engine cannot spool a GT42R off the line. 3.0 short times with 140 MPH traps aren't very clever ;-)

It's a drag racing only thing, circuit racers wouldn't understand.

5mall5nail5
08-07-2007, 10:55 PM
Wrong. Nitrous is a valid way to spool a large turbo off the line on the hit. Lag is a huge deal when your 2.5 litre engine cannot spool a GT42R off the line. 3.0 short times with 140 MPH traps aren't very clever ;-)

It's a drag racing only thing, circuit racers wouldn't understand.

Exactly and regardless of whether or not I give this car hardcore drag use, it's definitely going to make the car more fun to drive, make more power sooner, and in general I will have expanded my horizons learning it.

I just need to determine what sort of shot would be ideal without asking for trouble.

I don't think I should spray it so far in front of the TB Jordan - if I get a backfire through the intake I am pretty sure that's gonna be interesting.

ProjectP
08-07-2007, 11:13 PM
A lot of guys run em right before the TB, i dont see a prob with that if your tuning can keep up

good & tight
08-07-2007, 11:13 PM
Exactly and regardless of whether or not I give this car hardcore drag use, it's definitely going to make the car more fun to drive, make more power sooner, and in general I will have expanded my horizons learning it.

I just need to determine what sort of shot would be ideal without asking for trouble.

I don't think I should spray it so far in front of the TB Jordan - if I get a backfire through the intake I am pretty sure that's gonna be interesting.
You'll be safe with 50 shot, also your only using it to spool so you will only need it for 2 to 3 seconds a shot.....unless you keep your finger on the button longer:devillook

ProjectP
08-07-2007, 11:15 PM
I think he said hes gonna have his MS trigger it, prolly a good idea cause the temptation to hold it for a few seconds longer would be pretty damn tough to resist

5mall5nail5
08-07-2007, 11:22 PM
Yeah I am going to have MS do it for me, here are the variables:

Turn N20 on above ___ RPM,
AND Coolant above ___ F,
AND TPS > _____ value.

Add Fuel PW @ N20 Min RPM ____ mSecs

NOS Max RPM ____ rpm,
Add Fuel PW @ N20 Max RPM ____ mSecs



There is an option also to include NOS when using anti-lag... kinda scary haha.

So for the firing time I can have the min RPM be 3200 to start and have it turn off say 3800 rpm, only when TPS is wide open and such, and can have it add fuel on top of the fuel table in order to simulate a wet system.

5mall5nail5
08-07-2007, 11:53 PM
Oh yeah next question - anyone know the best place to buy a dry system? It seems most are all wet systems. I can do a dry system since I am adding fuel with the ECU, right?

MrBlonde
08-07-2007, 11:57 PM
Jon, talk to Trev. A single wet fogger into your plenum is the go, triggered by your ECU. You only want it for launching at a drag strip, forget road use.

xjeeper
08-08-2007, 12:22 AM
NOS makes a nice cheap adjustable dry kit. Shit, just get on ebay.

topshotta02
08-08-2007, 12:27 AM
you can run a single fogger dry or wet its really up to you
if you go dry i advise putting it before the intercooler to freeze it for lower intake temp
if you go wet it has to be as close to the throttle as possible to prevernt fuel coming out of suspension

either way you can turn it on as low as 1800-2000rpm with the right tuning and use a pressure switch to cut it off 5-6psi before your target boost

not sure about the commands you listed for the MS but if you go dry and have the ECU control both the activation and the fueling you solve one of the biggest nitrous problems, fuel delivery timing

i think you would absolutely love a 50 shot spool up setup, and dry would give excellent results
spraying dry through the cooler would also soften the impact on activation and help keep your intercooler extremely cold, especially if you use the pressure switch
you could have it freeze the intercooler after each shift while its building boost again

5mall5nail5
08-08-2007, 12:33 AM
Jon, talk to Trev. A single wet fogger into your plenum is the go, triggered by your ECU. You only want it for launching at a drag strip, forget road use.

Wet? Ahh dry wet dry wet... going nuts. If the ECU is controlling fueling I'd want to go dry, right? Refresh my memory - who is trev?


you can run a single fogger dry or wet its really up to you
if you go dry i advise putting it before the intercooler to freeze it for lower intake temp
if you go wet it has to be as close to the throttle as possible to prevernt fuel coming out of suspension

either way you can turn it on as low as 1800-2000rpm with the right tuning and use a pressure switch to cut it off 5-6psi before your target boost

not sure about the commands you listed for the MS but if you go dry and have the ECU control both the activation and the fueling you solve one of the biggest nitrous problems, fuel delivery timing

i think you would absolutely love a 50 shot spool up setup, and dry would give excellent results
spraying dry through the cooler would also soften the impact on activation and help keep your intercooler extremely cold, especially if you use the pressure switch
you could have it freeze the intercooler after each shift while its building boost again

Hmm cooling the cooler - good point. I'll have to think on that one - I have heard bad things of back fires thru the intake - wouldn't that risk quite some damage to everything? The only hard part is to know how much fueling to add and timing to pull, if any?

topshotta02
08-08-2007, 01:19 AM
trev is trevor langfield of wizards of nos, he is the nos guru.

if you go dry theres no risk of backfire because the fuel will be coming from the injectors so theres nothing to ignite in the intake.

i really think dry would be the way to go for this, mostly because you have the ability to control fueling an enrichment from the MS.

add plenty of fuel at first to be safe and work back.
general rule for timing is 2 degrees for every 50hp, ofcourse this depends on base timing and the overall tune.

ritoab
08-08-2007, 03:13 AM
Trev is the Master behind my system. Alex is giving you the best advise so don't confuse it with anythng else. Just go to Wizard of NOS forum and make a post on your topic and Trev would be right there to answer and you will not have to wait for weeks. Usually within the hour.

Rito

e34biturbo
08-08-2007, 07:58 AM
Exactly and regardless of whether or not I give this car hardcore drag use, it's definitely going to make the car more fun to drive, make more power sooner, and in general I will have expanded my horizons learning it.

I just need to determine what sort of shot would be ideal without asking for trouble.

I don't think I should spray it so far in front of the TB Jordan - if I get a backfire through the intake I am pretty sure that's gonna be interesting.


a 50 shot right before the throttle body will do wonders.....a dry shot will suffice if you are running it with MS

5mall5nail5
08-09-2007, 12:37 PM
Trev is the Master behind my system. Alex is giving you the best advise so don't confuse it with anythng else. Just go to Wizard of NOS forum and make a post on your topic and Trev would be right there to answer and you will not have to wait for weeks. Usually within the hour.

Rito

It seems their forum is broken?

el bob
08-09-2007, 02:03 PM
I don't have anything to add other than I just saw a new picture of Ryan Woon's setup yesterday and you can see where he put his fogger nozzle in the intake.

http://kai.caltech.edu/RyanWoonTurboSupraEngineWOTM.jpg

It's just to the right of the radiator cap.

On a side note, apparently he has recently got his hands on some new tires that he says are letting him launch a lot harder out of the hole and is hoping to take down is 8.62 record sometime soon.

byron
08-09-2007, 02:54 PM
sounds awesome. hope you figure it out!

MrBlonde
08-09-2007, 08:01 PM
Note also that Woon's plenum isn't massive ...

ritoab
08-09-2007, 08:13 PM
It seems their forum is broken?
I was on there site early this morning so try again.
He is going to want you to register with the site with your personal information but thats to keep out rough ralphs.

5mall5nail5
08-09-2007, 08:52 PM
Link me to his forum because the link I found is broken.

ritoab
08-09-2007, 10:20 PM
Here is the link again

http://www.forum.nitrous-advice.com/