Which kit for 87 tpi 350? Do you guys have any comments or complaints on any of them? I'm planning on 100 shot at the most. Thanks for the advice everyone. -Brian

 

Go w/ NX. Its good $hit.

 

j/k Nitrous works is the best

 

usually I say "try to avoid dry systems" because I see more backfires and leanouts with them and even though the TPI does not wetflow worth a crap I still recommend wet systems. But, considering the fact that you wish to only go up to 100 hp it may be the thing for you NOS #5151 i think, just dont change your mind later and say "Pill it til you kill it!"

 

N/X and top gun make probley the best systems for FI cars. the NOS systems are better for carb and direct port systems IMO

 

I think my NOS system is crap. I just wanted the blue bottle when I bought it. Plus their tech support are a bunch of weenies. The 5151 solenoids are puny, my braided line broke, and the jetting was absurd. Ok, so in summary, not NOS.

 

I have only used the NOS and NX kits,and I much perfer the NX kits to the NOS. The parts are much higher quality with NX.

 

NX.. the kits are rated at RWHP, and are within 2% of that... the other kits are no where near that. NX has higher quality components, requires no timing retard, etc. It's just a much better kit.

 

12 second Gta,

You are just joking on that RWHP rating aren't you? 2 percent?? Ok, good, I hope so.

 

Actually, no, I'm not. When I heard that claim from NX, I was weary... John is a very opinionated guy... But, I've witnessed it MANY MANY times, and experienced it myself. The only kit I have experience with is the 20920 Wet kit with this. The LOWEST I've seen it add when jetted for 150 hp was 146.9 The highest I've seen it add was 155.2 That's mighty impressive if you ask me. All of the other kits are within 10-15% of their claimed hp. Call The flag all you want, but I have the personal experience to prove it; and I prove it all the time down the 1320 against the kids with NOS/NW/Zex kits on their cars.

 

I concur with "12 sec GTA" we have seen the same on our dynojet within a few horses of what NX said the jetting was for. and yes the NX selenoids are BIG on thier single fogger wet EFI systems http://www.outlawperformance.com/gmtpiefi50hp.html

 

Oh the absurdity!! Getting within 2 percent of a power increase dealing with bottle pressure, timing, outside temperature, different conditions of different engines is an absolutley ludacris. You think if I put the same system on my car, it is going to produce the same (within 2 percent!!?) as on yours? Lets get realistic now!!

 

Yes, NX may use better quality componets. But no timing retard?? What, they have a new advanced way to inject nitrous into the engine? One that defies that a nitrous/fuel mixture tends to have different cylinder pressure characteristics than a non-nitroused one?

 

Maybe the no timing retard is in comparison to a dry shot? Not sure why, Call John and ask him yourself: 1-866-NITWARE (648-9273)
And make sure you are talking with John Stewart (inventor of NX)

I'm sick of arguing my point when it's what I have experienced, again and again.

 

NX doesnt recommend retarding timming BUT they do recommend NGK and lower heat range on plugs, and to use the highest octane fuel. In addition the NOS kit starves the first two cyl because of the plate system, which the NX kit fog it way before
for a good mix. I've always ran NOS kits with carb motors, but it seem to me NX was the best for TPI cars.

 

I called NX today to ask them about a problem I'm having with where to put the NO2 nozzle. While I had them on the phone I asked about the no timing retard. I also found it unbelieveable as GoFasterFirebird did because what nitrous does is the same no matter who's kit you're using.

At first he was quick to say no timing retard until I told him I had a custom prom with aggresive timing. Right when he heard that it was the same story as with NOS or anybody else. You don't need to retard the timing if you're using the stock timing tables on a basically stock motor. Once you start advancing the timing with either the aftermarket or your own burned proms you have to retard it when you're on the spray.

 

12 secondgta,

You shattered the 11 second mark?? That is 10s correct?? If so how did you do that?

Also, I understand you may have seen a car or two make approximate estimated HP but lets be realistic and stop generalizing. I can't even make within 2 percent power when temperature changes 20 degrees.

 

by shattered 11 sec, mean broke into 11s. 11.79 to be precise,
must have worded it poorly.

 

that better gofasterbird ?

 

I am surprised your G-tech held up to that.

 

I'm not. It's a great tool. And combined with the NA times I pulled at orlando speedworld, I'm not doubting it in the least. The mph was high for the gtech run, but they are always 4-5 mph high (ave. last 60' speed versus final speed.)

But, if you are so dedicated on making me look stupid, and proving your (nonexistant) point, here's a scan of my NA slip, 12.72 @ 116.4 I'm cabable of high 11s low 12s with slicks/dr's NA. But hell, you knew that already, didn't you?

Don't be getting all pissy just because you have an inferior N2o setup, and you know it.

 

1. Who ported your heads?
2. Why is your NA mph much faster many people with similar combos?
3. I am not saying my nitrous system is better. If you search I am opposed to anyone buying a NOS TPI system. You think that if I put in a NX system my car will become suddenly faster? DO you run a plate system? If not why do you think a nozzel is superior?

Also, the faster you are accelerating at the end of the quarter the more your g-tech will be off on mph.

"""But hell, you knew that already, didn't you?"""
Yes, I knew the NA time and mph that you post. I am just curious to why you are running fast with parts that seemingly shouldn't run 116 mph. Also, running 116 and 12.7 seems tough. I run a 2.0 60 and went 12.33. Are your 60 really that much worse than 2.0?

 

My heads were ported by a mechanic friend of mine, and yes they were flow benched. My 60' is a 2.1, not too bad.. but when I go into second, I spin almost completely through second; and I also spin badly into 3rd... so my 60' isn't the ONLY factor in the horrid ET. I don't know quite else what to say about my runs, but those are the times it has turned.

And, about the plate vs nozzle, I am saying you would be faster with the NX nozzle setup compared to your plate. The nozzle does not have the ability to EVENLY distribute the nitrous as well as a NX nozzle setup.

And, more about the Gtech, yes.. I know my MPH is off, that's why I never said the mph for the N2o gtech run, it's only pretty accurate as far ETs (1-2 10ths)

One question though, you seem to be turning about the same Mph as I do.. so why all the skepticism?

I understand my opinion is also slightly biasing me on the NOS plate vs NX nozzle setup, but it's also been proven.

And yes, I have run the 5151 on my car, and I didn't see as good as results as the NX 20920 on my car.

As of now, I'm choosing to not reply to this thread anymore for the amount of tension that I feel growing between us. Call on my runs all you want, it doesn't bother me. Even call on the whole NX vs NOS. Let's just leave it at we'll choose to be different to keep our integrity and not have this get dirty.

 

12 Second GTA, no offense, but you don't sound like you know what you are talking about. Where have you seen the Nx systems outperform NOS plate systems. You refer to your vast wealth of experience .... with 37 posts ... please enlighten me.

 

a) on my car. b) on about 4 other people's cars. and c) online all over the place.

I only have like 20 posts under this UID because I've changed it a few times. Used to be Ben87GTA, BtldGTA, and a few others. But they are no longer active.