Just a quick question... I am swapping from TPI to carb, if I take the wiring harness from my vehicle will it affect anything on my vehicle such as lights, lighting or anything else? I know I have to wire one of the fans. I guess I want to know if the TPI harness is tied into anything else. I plan on getting rid of my tpi system for a carb.

Thanks

 

Why would you want to downgrade your engine with an antique carb like that? Unless its going to be a race-only car, an EFI setup is better for the street.

Check the Carb section, where you should have posted this. They have sticky posts on how to downgrade from EFI to carb.

 

Thanks about the sticky, I will check it out. I posted here because IMO it is a TPI question. The question is "if I remove the TPI wiring harness, what will it effect on my vehicle?" I thought it was directly related to TPI and only a TPI guru could answer the question. I didn't know if I was changing to carb to put this in the carb section or if I was changing to TBI or changing to Holley Commander to put this in the holley commander section.
My apologies, I will pay attention in the future.

I am wanting to use a carb because in "my opinion" TPI sucks ****. No power, made for cruising, better cam choice with a carb. For less money I can put a carb, cam, fuel pump and single plane intake on my car and unleash the HP that is being held captive by the TPI.

 

Thanks bud, I reposted the question in the carb section. wish me luck!

 

the only reason ppl swap to carb is a lack of knowledge of FI... which is fine, power band is broadened substantially with FI, single plane intakes ARE terrible for power in higher rpms unless your engines built for it. honestly if your buying new parts, carb intake cam feul pump spend that money on getting heads or just and cam and port ur intake or just get it chipped lol you gain power. your gonna lose 30hp and 30torque roughly... carbs CAN produce the same power as FI, if you spend 1k on a carb vs **** FI and thats just peak hp not your powerband... and if you like cruisen your not gonna be able to do as much because your feul economy is gonna take a big hit. dunno whos giving you advice but i suggest looking into it ALOT more.

 

A TPI guru wouldnt have the answer to what parts you can remove from a TPI to change it to carb. That would be a carb guru, or someone who has done the changeover. The TPI gurus in this forum are the ones who have figured out the TPI intake and have made it even better. What really "sucks ****" are those that buy a TPI car and hack it up and devalue it, instead of starting with a carb car. Just "my opinion", nothing personal.
And do you really think its less expensive to convert a TPI car, considering all the time and parts needed, rather than starting with a carb car? I think its more expensive, when you really look at it. Especially since doing so makes the car totally smog-illegal for the street. In a few years, I'd bet the current government is going to make all states do emissions testing like California does.

 

Everyone that I ask tells me that dollar for dollar a carb will produce more power than TPI and over all better for drag. Here is a nice read...

http://www.vetteweb.com/tech/vemp_06...dyno_test.html

 

I thought that if someone truely knew about tpi they would be able to tell me about a tpi wiring harness. They would know what wires were in the harness, but I moved to the carb section like you said. And I would have bought a carb car but I found a clean camaro with new interior and a new 330 HP 350 and I wanted the car so I purchased it, hell the engine and tpi are not what was originally in the car. it came out of a 89 firebird rormfula, it was rebult and installed into my 87 z28. I have plenty of cars to drive around in I want a mild street / strip car so I want to add a carb. Hell it's my car I should be able to put a carb on it. I just had one little question and with all this "your stupid and don't know any better" we still have not talked about the harness. I thing I might even paint my camaro pink and put a bumper sticker on it that says "cowboys buts drive me nuts".

PS I do understand your passion about not hacking up car, but it's not original and it is a "87 CAMARO" you don't need to do anything but call it a 87 camaro to drop the value. It' not a GTO or 67 camaro, it is for people like me who don't have the money for older muscle cars. Plus it looks sweat, it's just weak from the factory. From the factory the camaro with the tpi was made for fuel economy and cruising, why do you think they run at such high temps and have weak rearends and trannys?

 

Mate no need to get frustrated, were just helping. The tpi harness is basic, easy to make work for a carbed car ur gonna want/need linkage to the carb for the pedal, and getting your gauges to work maybe a bit more work then ull want, if ur running a mech. Speedo it will be easy, for oil and water temp you may have to wire those to the cluster direct. I can remember off hand if they bypass the ecm. Gas prices are not going down. FI is no doubt more efficent. And there's more you can play with if you like tuning. if can afford 150miles to a tank. Go for it.

FI is more expensive the carbed, Only when building from scratch. You have tpi already though so to make more power its cheaper to keep the setup you have and tune it. Imo

I just converted to FI on my bird because boosting FI is more efficent, you get a way better power gain, and its safer. And I want laptop management. I have no problem with carb I've used em my entire life much simpler,

 

Thanks, I will look more into the TPI, good info. It just seems like the TPI parts are alot more expensive. If you know of any articles in which you recommend please let me know. Over all with new technology I would rather have EFI, the newer stuff (ls1), I'm just not big on the TPI. Anyways, I do have some parts, I have an intake and a fuel pump. But if there is something With the tpi I would like to look into it.

 

Yes a carb might be better for a race car setup, but EFI rules on the street.

Yes you can do what you want to your car, but you still have to follow federal emissions laws.

 

wtf is with your emmissions laws? does every state have them? in BC we have aircare, unless you live in the middle of nowhere in BC, but thats just a yearly emissions test, or every 2 years for 92 and newer. but why are you so concerned? just detune your car to pass retard timing, adjust mixture? its not hard to pass with way bigger motor. and im curious as to why ppl are keeping smog equipment on their car. if you emissions test your car when its hot. (if you have half a brain you wouldnt do it cold) you dont need egr or smog pump. that stuff is just clutter and robbing power? more extreme is get rid of the kitty with a straight pipe that bolts in place. bolt the kitty when u gotta test. this is like standard practice up here. just curious as to why in almost every thread people are imo overconcerned about emissions.

 

When you remove the TPI harness from your car, you will have to handle the TCC operation, fuel-pump operation, electric fan triggering, charcoal canister operation, VATS if applicable, and some minimal rewiring for your ignition system. If you have an automatic, in some cases you might have to bypass the switch assembly attached at the base of your shifter.

Just take your time and think things through as your cutting the computer harness away from the rest of the harness that stays in the car.

Of course you will need a different distributor, and modifications to the fuel system.

 

Federal emissions laws says that whatever devices the car came with when new, must remain on the vehicle for as long as its driven on the street. Or you can replace parts with ones that have been deemed 50-state legal with a CARB EO number. CARB is the California Air Resources Board (an appointed body, not elected), and EO is Executive Order. Not every state does emissions testing, but you're still supposed to leave the parts on the car to do their job of cleaning up the air. The EGR and the air pump do not rob any power (2 hp at the most, nothing you will feel). They're both shut off at wide open throttle anyway. The stock cat from the 80's is restrictive compared to today's "high-flow" cats, so replacing the stock one with a new one will give you a small horsepower gain. Compared to a straight pipe, well its about a 1-3 horsepower loss, according to magazine tests I have seen.
I'm concerned about emissons because its the law, and because I dont want to see members here get in trouble either with their local police, or if and when the current government makes every state do California emissions testing in order to continue to receive federal funding. Then you'll see this board light up with people begging for emissions parts and paying top dollar for them.

 

aircare is getting removed soon here, because it doesn't help the environment out enough vs money spent. % of ppl driving cars drive newer where the emissions are so minimal now. smogpump looks terrible imo. i see what you are saying about not getting in trouble. but how likely is it a cops gonna pull you over and be like SIR OPEN YOUR HOOD, legally that cant search your vehicle without a warrent, here atleast lol. i guess another reason im glad to be here

 

Thanks for the info

 

I see you like the Chewbacca Defense...

Carbs are still legal here in MS and we are not required to submit to a tail pipe smog test.

http://www.dmv.org/ms-mississippi/smog-check.php

So I am following the laws on my state.