well second time in a week. maybe they'll put it back as a sticky.

https://ls1tech.com/forums/showthrea...nozzle+testing

 

Looks like the Black Mamba may be the top dog with base Nozzles concerning overall capabilities.
Robert

 

O.K. I have my invoice in front of me and the kit was purchased 6-14-06 which is only a little over 10 months ago, I am almost certain it was rated at the wheels when I talked to you Matt or I wouldn't have bought it. Like I said before Matt has been very helpful but it kinda sucks I have to spend another $110 for just a nozzle, the entire kit was just on sale for $349. I am still wondering about just going to a second stage.

 

I just looked it up, we made the switch to RWHP jetting August 28th, 2006 (we didn't even start dyno testing RWHP combos until August 4th, 2006). There is NO way I would have ever stated that the jetting on your kit is RWHP, as all you would have to do is a search from the time of purchase to see what other people were putting down, how could I then explain their dyno results as being RWHP?!? At the time you purchased your kit the jetting was rated at the crank & conservative. Since that time we have revised the Sudden Impact kit line. Changes happen, take a look at the computer industry.

Matt

 

If i was Harris I would just swap out the nozzle for the guy , , but thats me ,, hehe

Andy670 , buy a wide ban for around 250 bucks and tune the nitrous yourself instead of driving for 6 hours to a dyno .

Your A/F on the bottle changes with the seasons so it will save you so much money in dyno pulls .

Not to mention you will always know your A/F at any point in time .

 

THanks for the quick reply Matt, My problem is I had the 150 hp jetting, bottle pressure was a little over 1000 psi, a very reputable tuner at speed inc. in Chicago and it only made 85 rear wheel horsepower. I copied this from ls1.com (04-09-2006, 11:58 AM #2
Matt@HSW
Sponsor


Join Date: Aug 2005
Location: Warminster, PA
Posts: 173
Usually our 150 shot comes out to a 13X rwhp shot, so a little over a 125 rwhp shot. If you are looking for a 100 rwhp shot use the 125 jets. For a little more then a 125 rwhp use the 150 jets.

Matt)

I want to know for sure that the small solenoids, bottle valve, and new nozzle will put out 150 to the wheels? You said in the above post that it will make 13x to the wheels with the 150 jetting? ZoomZ thanks for the advice, It was my first dyno tune after heads, cam, stall, gears, so I wanted it done by a professional.

 

Yea , i was sugesting it for future use .

If you spray all the time like i do , its good to know exactly what your a/f is at any given point in time during the year .

If you setup the nitous jetting in the spring time , its going to run pig rich in the summer and dangerously lean in the winter .

 

ZoomZ, I live in upper michigan, In the winter we have 6 feet of snow so the car is stored, LOL. A wideband is in my near future cuz if I get this nitrous deal setteled I should be around 600 at the wheels. Yes I spray all the time too, in the winter I spray a ton of nitrous through my 2005 Skidoo mach z 1000 making 280hp with that. So I'm not totally a rookie when it comes to nitrous. A local nitrous guru looked at my solenoids and said they are too small for a 150 rwhp shot so I don't really know which way to go right now, All I know is my kit did not make very much power and I am not happy about it. I have bought everything from Matt @ harris and he has been excellent to deal with and their products seem nice quality. But if I have to spend hundreds more dollars to get even close to advertised hp I am taking it off and selling it.

 

I would suggest maybe getting another tuner to look at things. If you are down that much HP, likely you have an issue. Instead of blaming the kit/jetting with no real proof the issue lies there, find out what is wrong. It could be tune issues for sure and many times is. Even with a different nozzle using the jetting that made 85hp, I would bet that you will still see about 85 hp, the nozzle in of itself will not make anymore hp, however, overall hp capablilitie may be increased by going to a different nozzle. Do you see my point? Not trying to break your ***** either, just giving another perspective.
Robert

 

Thanks robert, I am looking for all suggestions, the different nozzle deal is what Matt at Harris said I need. The car made 410 rwhp on all motor and only went to 495 with the n20. I had two full 10 lb bottles for the dyno session and we swapped bottles with no change. Everything is hooked up properly, the nitrous and fuel both come out, air fuel was good, what else should I look for? I understand it looks like I am just blaiming the kit but I have seen and help install many kits along with many hours of tuning and testing our snowmobile kits. How about timing? Should I be taking any timing out or is 28 degrees of total timing O.K. for a 150 shot. I would love to resolve this issue with it being something simple or an install problem but I have double checked everything.

 

In a M6 trans car we would see 12X-13X to the rear, you have a auto so it will be lower. If I remember correctly on the phone you said you guys got it to 9X HP, up from 8X. I think it's pretty moot though, as on the phone you said you wanted 150 rwhp, which you won't get as the max of the kit you have is 150 at the crank.

Matt

 

O.K. so is it the kit or just the nozzle?

 

Where Did you drive for the tune im from mich.? just curious

 

LOL, for the last time, your nozzle is the limiting factor. Nothing else has changed other then the nozzle, nozzle holder, we include thread sealant, and we now use stainless steel jets between your kit & the currently shipping ones. The kits are rated to a 150 RWHP shot (SI Single Nozzle Wet Kit), although some customers have gone higher (175ish rwhp). Your results may vary if going above what the kit is rated to.

Matt

 

Not trying to start anything with sponsors I was just wondering why a crank rated shot of 150 would end up being 85-90 at the wheels that is a 40% drivetrain loss, that just doesn't really add up to me(just curious).

 

I had the same question, I just don't like arguing with people that have answers for everything so I didn't ask. If I wanted to start an arguement like that I'd just call up my kid's mom.

 

In this particular case, who knows for sure, could be so many things, from wrong jetting to incorrect tune to ???. That's why a good tuner is allways nice, but as Matt pointed out he wants 150rwhp and this can not be done with the old style nozzle. I will bet that the old nozzle with slightly larger jets and it would be right on the money as per advertised. We all have to remember, all kits, the rec starting jetting is just that, a starting point. Every car, every companies kits, will have variations from advertised jetting/hp. Some are lean, some are rich, some are higher hp, some are lower hp, does this mean something is wrong, not allways, this is why checking parameters and jetting to what you want is advised. Not all cars have the same Volumeteric Efficancy, so thus the variables.
Robert

 

Ok I understand that and I am not trying to put down any sponsor I actually just placed an order for some parts from harris

 

I didn't think you were putting anyone down, just clarifing for those reading along.
Robert