Harris Speed Works 2V kit... help?

[1991notchbackLX]

Well, I just ordered these two things:

Harris Speed Works Sudden Impact Nitrous Kit for 99-04 2V
Includes all hardware with jets from 75hp, 100hp, 125hp, 150hp.
http://www.harrisspeedworks.com/product.php?productid=589&cat=91&page=1

Harris Speed Works Microedge nitrous controller
http://www.harrisspeedworks.com/prod...age=1&featured

Does anyone on here have experience with Harris Speed Works or this kit in particular? What kind of fuel upgrades will I have to make to my car in order to run this kit? I'd like to get it tuned for the 125 shot. This is a 100% street driven car and it always will be. Anyone with some knowledge please chime in!! Thanks in advance!!

Chris

 

[ItsStock02]

why no plate kit?

 

[1991notchbackLX]

why no plate kit?

What's the advantage of a plate kit over this wet kit?

 

[mazen189]

What's the advantage of a plate kit over this wet kit?

I think nothing.....I have a wet kit with no plate.

 

[BurningRubber]

Go for the plate kit if you can spring the extra cash. I have their plate kit on my car and it's VERY excellent.

The advantage of the plate is a much, much cleaner install and a smoother, harder hit and better atomization of the nitrous and fuel which equates to a safer shot. If not, their nozzle kits are fine as well and just as quality.

I am currently running a 100 shot basically untuned (using a modified stock tune via Diablosport Predator, richening fuel and pulling timing), which you CAN do. It's best to throw the car on a dyno and verify the air/fuel ratio to make sure it's good. Keep in mind, if your Predator is like mine, you can only pull timing in percentages, not degrees. So you may not be actually pulling a full 2*-4* when you think you are. You can do datalogging to verify this.

A 125 shot I WOULD at the very, very least pull between 2*-4* of timing. If you don't want to get the entire car tuned, you can use a bolt-on timing adjuster, or use a flash tuner ONLY IF YOU RUN THE STOCK TUNE and have the option to modify it, which you should be able to do with your Predator.

You'll need at least 1 step colder plugs, 2 steps colder wouldn't hurt on a 125 shot but I don't think it's needed. Use copper plugs as well.

So long as your fuel pump is in good shape, you should be ok on the stock fuel system. Something like a Boost a Pump would help, or even a SVT Focus fuel pump, but may not be needed.

Their MicroEdge looks like a great unit to have. I personally don't have one, but I haven't heard of one person who isn't satisfied with theirs.

 

[Tim2002GT]

That is a very good kit, same one I use. I do have a tune from Brenspeed.com for when I use the nitrous, but it isn't a whole lot different from my NA tune from them. Total ignition timing(WOT) on my nitrous tune is 16*. My NA tune is ~18-19*. My a/f before I installed LT's was spot on at 11.75:1. After LT's, I had to start adding around 8% WOT fuel to my tune to get the a/f back to a safe level.

If I were you, I would recommend you get an SVT Focus fuel pump or a Walbro 255lph pump if your gonna spray anything over a 100 shot.

Also, as Ryan mentioned, get some colder plugs. I use NGK TR6's gapped at 0.035. They are 1 heat range colder than stock.

 

[BurningRubber]

Datalogging I think my WOT timing was between 18-19* and that's what it's at spraying the 100 shot. I think I pulled 10% timing (cannot be 100% unless I checked) at WOT, and added something stupid like 15% WOT fuel just to be on the safe side. It actually doesn't run bad on motor like that, but I did notice a drop in power from the reduction of timing.

No pinging or anything so all is alright for now, but it really should be correctly backed down in my case.

Only reason I'm doing it the way I am, is because my car has so many miles on it anyway and it's only going to last so long until something gives. It'll probably take all the 100 shot runs I give at it, but it'll chuck a rod driving down the road at 45mph...

Point is, I don't want it to give, but I don't have a pristine engine I'm trying to save. If it goes, then it's my chance to do something I've always wanted to do; build my own motor.


It'd be a very good idea to tune the car, and if not tuning it, at the very least check the A/F ratio. I swore I'd never spray without doing so, and then I did it on the 75 shot, and now the 100 shot almost 2 bottles though from the first spray. Also swore I'd never make a track pass without a window switch, and I made about 5.

Maybe I have a leak and it's making me a little crazy when the bottle gets opened...

 

[Tim2002GT]

Haha, I went through the same kind of things when I 1st put the kit on my car! Wasn't gonna spray more than a 75 shot until I got on a dyno, that lasted about a week! Hell, I probably ran 20 bottles through my car on a 125 shot before it ever saw the dyno.

On a side note, with a 100 shot, plenty of people have ran them using the stock tune without any problems. Most kits are jetted on the rich side out of the box so a/f should typically be a little rich anyway.

 

[1991notchbackLX]

Thank you so much for all of the info guys! The reason I went with the wet kit over the plate kit is because I got the Sudden Impact kit and the Microedge both brand new in box for $400 shipped on Corral. I saved $129.98 plus tax and shipping and I think I made out extremely well on the deal!

So, do you guys run a "flip-chip" to switch between your regular n/a tune and your nitrous tune, or is the nitrous tune safe to run n/a when you're not spraying? I'm going to run the plugs Tim suggested and spring for a 255 lph Walbro in-tank. Will the car run badly with the colder plugs when I'm not spraying? Sorry for so many questions, but I have absolutely NO experience with nitrous. Thanks for being patient with me!

 

[BurningRubber]

Thank you so much for all of the info guys! The reason I went with the wet kit over the plate kit is because I got the Sudden Impact kit and the Microedge both brand new in box for $400 shipped on Corral. I saved $129.98 plus tax and shipping and I think I made out extremely well on the deal!

So, do you guys run a "flip-chip" to switch between your regular n/a tune and your nitrous tune, or is the nitrous tune safe to run n/a when you're not spraying? I'm going to run the plugs Tim suggested and spring for a 255 lph Walbro in-tank. Will the car run badly with the colder plugs when I'm not spraying? Sorry for so many questions, but I have absolutely NO experience with nitrous. Thanks for being patient with me!

Wow, that's a hell of a deal right there. Congrats.

I don't flip between tunes. If there were a time where I wanted to run my car N/A and try for the best times, I'd load the "performance" tune (which adds timing, etc.) and run. For nitrous, I run a stock tune with a little timing pulled, and fuel added.

The car will run fine on a nitrous tune even when you aren't spraying. It's absolutely safe to do.

The car will run fine with the colder plugs as well. I doubt you'll notice a difference in power between regular plugs and 1 step colder plugs.

Get all the knowledge you can before you spray. It helps to learn about it so you can trouble shoot and know how to spray your car safely as possible.

 

[1991notchbackLX]

Wow, that's a hell of a deal right there. Congrats.

I don't flip between tunes. If there were a time where I wanted to run my car N/A and try for the best times, I'd load the "performance" tune (which adds timing, etc.) and run. For nitrous, I run a stock tune with a little timing pulled, and fuel added.

The car will run fine on a nitrous tune even when you aren't spraying. It's absolutely safe to do.

The car will run fine with the colder plugs as well. I doubt you'll notice a difference in power between regular plugs and 1 step colder plugs.

Get all the knowledge you can before you spray. It helps to learn about it so you can trouble shoot and know how to spray your car safely as possible.

Tha's all good to know, thanks! Can you recommend any good reading material on nitrous? I've been doing my own research but I'll read whatever I can get my hands on. Thanks again!

 

[Mr. Rustypwnz]

i run a 100 wet n/x kit, with no tune .035 gapped 764's with 93 octane. ive been pulling plugs and checking often and they look great!!

 

[Tim2002GT]

Here are a few links to some info I used learn more about nitrous...

Nitrous Variables
Basic Nitrous Tuning(101) -- Muscle Mustang & Fast Fords
How does NOS create Torque? - Thor Racing (Japanese Performance Car Tuning)
New to Nitrous?
Nitrous Tuning 101 - The Basics
The Nitrous Oxide High Performance ... - Google Books
Modifications #11
Kiss that Torch Good Bye - Nitrous Oxide Bottle Heater Article

 

[BurningRubber]

Tha's all good to know, thanks! Can you recommend any good reading material on nitrous? I've been doing my own research but I'll read whatever I can get my hands on. Thanks again!

No problem. Tim put up some great info about N20... I haven't even found half of those links, lol.

i run a 100 wet n/x kit, with no tune .035 gapped 764's with 93 octane. ive been pulling plugs and checking often and they look great!!

Nice. I have yet to pull any plugs, but am interested to see how they look.

Here are a few links to some info I used learn more about nitrous...

Nitrous Variables
Basic Nitrous Tuning(101) -- Muscle Mustang & Fast Fords
How does NOS create Torque? - Thor Racing (Japanese Performance Car Tuning)
New to Nitrous?
Nitrous Tuning 101 - The Basics
The Nitrous Oxide High Performance ... - Google Books
Modifications #11
Kiss that Torch Good Bye - Nitrous Oxide Bottle Heater Article

 

[1991notchbackLX]

I'm planning on switching to a Walbro 255 in tank pump, but do you guys think I should also upgrade my fuel injectors to a larger size, maybe 42#? Is that necessary? I'm not sure that it would be, seeing as the fuel and nitrous are mixed by the solenoids and sprayed into the intake stream by the nozzle.

Also, can you give me a part number/brand on the one step colder plugs that I should run? Thanks!!

 

[Tim2002GT]

You are correct on thinkng you don't need bigger injectors. If you were using a dry kit, then yes bigger injectors might be needed. The Walbro pump will work fine. Also, for spark plugs, i use NGK TR6's. They are 1 heat range colder than stock.

 

[1991notchbackLX]

You are correct on thinkng you don't need bigger injectors. If you were using a dry kit, then yes bigger injectors might be needed. The Walbro pump will work fine. Also, for spark plugs, i use NGK TR6's. They are 1 heat range colder than stock.

Thanks for confirming my thoughts! I'm sorry for making you repeat yourself! In reading back through the thread I noticed you'd already told me what brand of plugs to buy.

 

[BurningRubber]

If you have trouble finding part numbers for the TR6, or your parts store has no clue what you're asking for, tell them you need an NGK replacement plug for a SVT Lightning (the S/C 5.4 body) and that, I am 99% sure, is the TR6.

I'm using Autolite's in mine, 103's. They're a 1 step colder copper plug and cheap.