I was looking here in the search tool and I couldnt find something to my question.

I would like to run a shot of 50 hp (NOS system) in my Evo:

iīm scare but, i have a challagen in two mothns, so I need my car faster than now.

Mods of my car are in my sing...

My question is, If I put 50 hp of nitrous (wet or dry, what do you suggest?) I need a retune???

A friend of mine in his Evo 3 with stock ecu, only a ship (i think dsm link) he told me that I dont need a retune. He ran his car with 40 hp of nitrous, but I want to know of the experts!!!

Thanx!

 

After reading your mod list, you can pick up over 50 whp from a re-tune and better fuel. 500 on pump gas (91-93) is more than plausible on your setup. If you do not get 91-93 in El Salvador, try getting your hands on some race fuel. I wouldn't bother with nitrous, for goodness sakes your already using meth.

 

youll need a tune for the actual NoS, when u run nos u have to adjust timing because of detonation. Rule of thumb ive used on large CU engines is 2 degrees for every 100 shot.but this is on 6500 RPM max engines. if you dont adjust timing youll have some issues. Also need to feed more fuel so u dont run lean. Could be pretty tricky on this type of car, ive only used Nos on large CU Carbuerated applications.

i used a staging controller for Timing, inside the car, so i didnt have to move the distributor around when i wanted to run nos, but i was doing a 300 shot so the MSD and controller were worth it. Kinda like youll have to have two different tunes for you timing Advance/retard if u want nos on this kinda car. Also on a car like this you might be spending some money on Nos bottle refills after awhile it might be cheaper to just add Better mods. i dont think i would do Nos on my Evo, to much left to upgrade. Each Nos bottle is around $50 to refill, not to mention what youll spend for the actual system, 50 shot might end up not being worth it.

im not sure what a dry system would in this car.. kinda good question thou wonder how the sensors would react. Dry is deliverd before fuel and mixed with air before fuel is added, all the sensors from MAF down are gunna read the NoS. This would be HARD to tune.

a wet kit would be easier to tune by far, cause your adding in NOS at the last point in the engine With Fuel mix [hense wet] but youll still need a tune cause of detonation and plenty of fuel delivery to compensate.

Both systems could be Tricky in a car like the Evo, i can easily see someone doing a 100shot and not adjusting the Timing or compensating for Lean mixture and easily blowing the engine up.

 

Ok, thanx guys for your answers!! Yeah, Iīm in that process, or made some mods like evo 8 ported stock Intake Manifold (Evo 4 IM is shorter than evo 8 IM) and SD, and new tune, but I donīt now what can I do!!! I have a bottle (10 pounds) of NOS with the dry system, but I would like dry system!.. But, If you see that dangerous I wouldnīt take a risk!

With my 89 oct gas, I use meth (50/59) plus a mix of Xylene 20% with 80% gas.

 

What system do they use to rate fuel in El Salvador? Here in the USA, it is rated in Anti Knock Index (AKI). I know that a lot of South American and Central American countries rate their fuel in RON.

89 RON = 85 AKI

 

Tolulene works great too with a mix of gas, 20 or 30% and add some Trans fluid 2% for a lubricant and you have a great Race Fuel.
i use tolulene here cause its a bit cheaper and works better then Xylene. Also Xylene is known to erode seals and cause other fuel system issues.

 

In that case I donīt know sir... I use only Texaco "Premium" Here nobody talk about ROM or AKI, only oct. For example, the gas that companys sale, Premium for them is 97 oct or 100 oct.

But, when I was in the proccess of tune my car (email custom tune) always tuners says that gas sucks!!!

In Central America or "premium" gas is around 89 oct. Regular gas is 87 oct. they mix the gas with water. Itīs not 91 like cali. Cali gas is better than our gas. When you open your tank fuel there is water in the walls!

 

For me is too expensive tune with race gas.

1 gallon of VP C16 its cost $35 dollars...

If I made logs many times for tune my car, its a lot of money. For that I was thinking in NOS but, i would see what can I do to increase my horse power levels.

 

If you have a meth kit, why don't you look into running more meth, or using the meth to fuel your nitrous?

 

Wow! That sounds horrible

 

You could easily run a 50 shot if you had better fuel. Just run on the rich side by using a larger fuel jet to compensate for the nitrous (not NOS).

 

i Donīt get it

 

consigue vp Q16, si no la puedes conseguir, ve a un laboratorio y diles que quieres tolueno y lo ligas con la gasolina del salvador, el tolueno tiene 114 octanos...

Rommel de los Santos

 

Do e85 then 50 shot

 

What he is saying is you can run more fuel to compensate for the added air (50 shot) you will be adding. Thats the difference between a wet and dry N2O, A wet shot adds more fuel with a separate solenoid. A dry shot only uses one solenoid and is up to user to add more fuel somehow. Only down side is you will have a very rich map when your not spraying if you dont make 2 maps.

Is E85 an option in your area?

I would run 100% meth instead of a mix in your case.