I basically have a modded 305 TPI and the best i could muster out of it N/A with some mishaps is 14.2 at 94mph on street tires. As of now im close to repairing those problems and should do high 13's easy. I havent had time to go to track since its closed this season. I've come across some $$ and like to go with a power adder of some sort. I like either A) Nitrous Express wet kit or B)Procharger w/ intercooler about 9psi. My bottom is basically strong enough to handle either both power adders. Compression is at a safe 9:5 to 1. I am however using stock chip. Now i realize that with the Nitrous that i'll have to retard timing 2 degrees for every 50hp increase it gives me, but for the $$ i think its somewhat worth it. But i always wanted a Procharger kit, They claim since it has an intercooler no ignition retard is necessary and the power is there whenever you need it. The price isnt really that bad but im torn between the two. Id rather much stay with only one power adder so which would u guys go with? To be honest im scared to use the nitrous since i never dealt with nitrous. Im hoping to do low to mid 12's. Yes i know that i'll have to probably increase injector size or fuel pump to compensate for the power adder but which route is more dependable and better?

 

Maybe I'm old fassion, but I don't like NOS to much. I'm not saying it won't make your car go faster tho. (yea, I'd be scare of NOS as well, I have heard some nasty stories... but they are not common... or so I'm told)

NOS seems like cheating to me, (I'm not trying to start up a war here) at the flick of a switch you have instant power boost.

I'm not sure how much cheaper (if at all) it is to have a NOS system put on, but you would have to keep refilling it. I personaly would hate that. I would want to spend a lump sum of money for a mod, and never (well, at least for a looong time) have to pump more money into it.

Just my $.02 I'm not sure which would make your car faster tho.


Good luck with it which ever way you go!

 

they are both perfectly good choices as well will give you the desired power. you have to ask yourself honestly what one you would rather have.

if price is a consideration at the present time N20 might be the way to go...understand that it isn't cheap though with most places charging roughly 3.75-4.50 lb depending on where you go it can get expensive.

with all cost considerations N20 is very cheap to get into the game, but all the little safety thing add up and you don't want to forget about safety.

as far as a procharger unit there again it depens on your price and which model your considering....different units are more suited for certain applications as well as the cost varies greatly. installation experience is more important and the cost is typically alot higher. when tuned properly with an engine that can handle the abuse this is the best route because it's there all the time. unlike N20 which isn't.

if i were to do it again i would have rather waited a little longer to save up for a d1sc procharger than go the route i went, but i'm happy because i can still use my N20 for my intercoolers so it isn't a problem.

the biggest thing is to read up alot on both of these applications and understand them from a safety aspect. know what it's going to take to use both of them and how much it will take to get you where you want. without more info though it's rather hard to try and steer you to one over the other.

when i put the N20 on the car i wanted it basically for saturday nights and the ocassional strip use. i soon found myself filling up bottles at least every two weeks which at 45 a pop wasn't cheap. that coupled with the cost of everything i needed to make it work perfect i could have had a lower power procharger model.

they both are alot of fun, but each has their advantages as well as disadvantages.

good luck with your decision, i think you should do both though....nothing like a sweet wine to the engine while purging out a quick burst of N20 at the light.

 

thanx for both inputs. I understand the basics of both and have an understanding of the pro's and con's of both. Like i said i have never dealt with any nitrous sytem. Nitrous fill ups(10lb bottle) go for $34.00 here. I believe the procharger kit that im referring to is the DC1 kit. Im trying to figure out which is more applicapable for me. Will i take it out on weekends? Sure! But as i said id rather go for the route on which is dependable and dosent need to be pampered. $$ isnt really a big thing as of now. Right now id like to hear from people that have/had either systems and here their side of the story. Again thanx guys

 

Procharger is there always. One time setup fee and have a chip burned to match it and all will be well. You can burn a chip for NO2 but guess what, you can't run it too long and you will always have to pay to have the bottle refilled. That adds up.

 

well they both have tunning issues so understand that it is something that you have to keep up on. one won't be any easier than the other and they both will amount to the same price over time.

typically engines that are built to handle this sort of thing are built identical for both. so if your shortblock can handle it your good.

both will need fuel system upgrades along with their own respected programing issues. the cost of these again are the same.

safety aspects, detonation is a serious thing with both of these, nitrous more so....it also depends on the amount of shot you plan to run as well. guages, fuel safety switches, activation programing are all nice to have but aren't included. again costs that will incure.

the basic N20 wet kit will come in at just under 600 and then that's where the price jumps.

the basic procharger kit to get the same amount of power will come in at just under 3,000.

your best bet is to try and find parts used since cylinoids and main units can be rebuilt for fraction of the original cost you can really save some money here.

figure on a solid 2,500 to get a good wet kit up and running with no real problems. twice that with the procharger if you go with a nicer unit.

understandably less if you find certain parts used and have working knowledge of the system so that you don't have to pay anyone to install or fine tune it. it really comes down to personal choice as no one person can tell you one is better than the other.

if this were the case i know i would tell you to go turbo over all of them.

 

I feel the others above have gone over the pros and cons of both systems. So, let's discount the money and tuneability issues and talk strictly about performance. The most amount of nitrous you can use on a 305 is approximately a 125 - 150 shot. Going on the general rule of thumb that 100 horses reduces your time one second, that's a maximum of 1.5 seconds, or mid-12's in your case. With a D1SC, I have gained 2.5 seconds on my 305 (with more "growth" potential).

The problem I have with nitrous (which I've had in the past) is the fact that it cannot be considered a "plug and play device". It is very temperature dependent. The nitrous pressure has to be dead on or you run the risk of running rich or lean. I don't like this. Given a controlled situation, i.e. At the track, you can monitor the nitrous pressure and jet accordingly (which takes time). Or you can heat or cool the bottle. All this means it's very hard to use it on the street because no one can monitor the pressure and "adjust" in an instant. Also, I don't think anyone who has nitrous has their bottle installed and ready to use ALL the time.

On the other hand, a blower will give you power on demand with no pressures to constantly keep an eye on, nor does it require changing jets.

All in all, you get more performance out of a supercharger (at least in a 305) and it's ALWAYS there, for those times when you "need" it.

 

very true...........

but.


the downside to a supercharger is that its there all the time. so you had better be sure that the engine is really set up for it. especially if you tend to run a decent amount of boost and with all things money is an issue to just about everyone.

i think going with a cheaper supercharger model is the best route for you...if you have the money i'd go with a d1sc...if you really have money avoid both and go with a turbo.

nitrous is great don't get me wrong, but it just isn't there. for occasional use and especially at the track it's alot of fun. everyday street driving wise it's very impracticle though. it's not like you can hit the switch and try to pass that guy up in front of you.........you could, i know i do, but it's not the same as forced induction.

 

....the downside to a supercharger is that its there all the time. so you had better be sure that the engine is really set up for it.

It goes without saying that an engine should be able to handle the additional cylinder pressures imparted when in boost (this holds true for nitrous also). However, don't imply that "it's there all the time", means you're in boost all the time. That's far from the case. In my daily-driving, I MIGHT go into boost (and only barely, 2-3 pounds) once and that's only for a couple of seconds. That's probably equivalent to a two second burst of a 25 shot of nitrous. I guess it depends on your driving style though.

....with all things money is an issue to just about everyone.

How true. You want to play the game, you've got to pay the price.

...if you really have money avoid both and go with a turbo.

IF you desire to custom fabricate almost all the plumbing. Unfortunately, no one today makes a kit....bummer...

....nitrous... just isn't there... for occasional use and especially at the track it's alot of fun. everyday street driving wise it's very impracticle though.

Yep, under controlled conditions (track), nitrous has its virtues. For street use? Nope, too many variables.

Willie

 

Depends on what you are looking for.

do you need or desire the power there all the time or is it simply something u plan on using to get your bragging rights aka track slips?

for me, the choice is easy. i dont need nor desire that power all the time. nitrous is my choice of power adder. initial cost is cheaper and the heavy tuning isnt needed. as for the person who said nitrous costs 3.50-4.00 a pound, i hope you're in canada. good god. the most expensive i've found was 2.89 and right now its "on sale" at a local shop for 1.79.

basically, it boils down to what you want to do. both provide nice gains and have potential to turn your car into a freak. do you wanna change a pulley or change a jet?

 

feel free to charge me 2.00 a lb then and i'll have you filling up my bottles everyday.

4.50 over here and it's been like that for over two years. 45 everytime i want to play. 8 or 9 times at the track and about 12-15 on the street with a 75 shot.

i love the power and the ease of everything....but that's it. it's by far anything but cheap out here.

 

ouch. i'd move

 

cheap nitrous and warm weather.........no wonder you have a major import crisis in that state.

if nitrous was that cheap i'd be running it all day long as well.

 

i just made this decision myself only a month ago. in the end i went with the NX 150 kit *see sig* the reason i did so is because if i went procharger it was going to cost $3k. plus an intercooler $1500. plus labor for install cuase im a retard *an easy $500* so roughly $5k. nx kit $500, install $100. so i saved $4400 and i get about the same power gain if not more. (specially since im going to 200 jets) granted its $3.75-4.00 per/lb or $40 per refill. but that mean id get 110 refills before i get to the price of the s/c. another thing i though about was the whole power on all the time, or flip of a switch. the way i ended up puttign it to myself was if i know i can beat a car N/A y will i need to spray. if i know i have to spray to be in the same hp/tq range as anotehr car ill know i have to turn it on. so if i want to kill the occasional cobra or ls1, i dont have to flip the switch. where if u have the s/c, u will have to ur the s/c power all the time, which will put more strain on the engine just to kill a car thats not worth the strain/wearand tear on the engine. hehe and as far as the people who say nitrous is cheating.. stop crying cause u got sprayed on LOL..

 

Wow there were alot of valid points given. Im still at a loss. I was thinking of going with a single Turbocharger but thats way above anything i want to spend. I've seen Procharger kits with intercoolers for TPI go for $2,800.00. I must be blind or there's something to that price. Installation on both power adders wont cost me nothing since im pretty good with working on cars since im a mechanic and i can read . For one id love to get a Nitrous system, I've seen used, with safety switches,solenoids,bottle,gauges,purge go for $400.00. But what im afraid of is as written about "Detonation". As for my bottom end, Its basically been rebuild with Forged Pistons,Steel GM Crankshaft(internally balanced)Forged Rods,Cleavite bearings and Moly rings. Then again its all on what kind of cam im running as well. I forgot the specs, but im running the Accel cam part # 74211. Some say the cam is too of a big lift for my motor. I have vette alluminum heads which were ported and polished on both intake and exhaust ports,Edelbrock intake,ford 19# injectors, Ported Plennum a few other stuff. Like i said i never dealth with nitrous so i wouldnt know what to do first hand. I understand about activating it above 2k RPM or during 2nd gear. I do have DR out back and 3.42 rear with T-56. I wish there were a company that would let you rent a nitrous kit for a weekend