will a 2003 chrysler crossfire run without catalytic converters. Just running pipes in their place


Asked by May 27, 2014 at 12:14 PM about the 2004 Chrysler Crossfire Limited

Question type: Car Customization

12 Answers

Tom Demyan

Sure it could, but don't do it. Factors you want to think about. CEL or SES light would be on, since your removing some O2 Sensors in the procees. Your Gas mileage will be worse, no more backpressure, smell will be worse and depending on what state you live in and if you have emmission, you will fail and it's also illegal to remove them. You will have a tough time selling the car without them. I suggest on keeping them to help future generations breath a little easier.

3 out of 3 people think this is helpful.

Great answer - you gave straight answer with only a slight tweak to his conscience. HEY Father - can I commit adultery? Of course you can but......


Where I'm from it was (don't know if it still is) illegal to consume alcohol within view of the public. That meant you couldn't have a beer outside if you were in a place where you could be seen. The J.P.'s pretty much allowed the back yard as being out of public view (even if a neighbour could see you) but the front yard was different. Guess where I put the picnic table (wasn't out back). Automobile emissions are bad but the current approach to stifling I.C.E.s is illogical and uneconomical BUT OIL COMPANIES LOVE IT.


you will have check engine lights, your gas mileage will go down, you will fail emissions and it's illegal for a shop to remove them. (in GA it's a $10k fine to the shop.)

1 out of 1 people think this is helpful.

another straight answer


Many of the people doing/wanting these customizations dont really understand how an engine actually works. They want the exhaust flow restricters removed because someone else did it and said it made the car faster. And that rumbling sound coming from the exhaust when you throttle down is cool. When in fact that rumbling and popping sound is the quickest way to kill an engine and blow out mufflers that get loaded with flamable combustion gases. Removing restriction in the exhaust will destroy your valves and seats and isn't the greatest for the compression rings either. The long and short of it is thats the quickest way to need a top end rebuild or worse case a complete engine rebuild/replace.

1 out of 1 people think this is helpful.

we did run straight pipes in the olden days just for the throaty sound and to be a bit rebellious.


@Chassy:Yeah but that was back when engines were made to last and take wear and tear. These POS engines today aren't worth the room they take up. In fact the idiot engineers designing them don't even take into account that Timing belts break to easy (unlike chains or gears). And when you don't leave enough head clearance when that belt breaks it sends the piston into the valves. With everything being aluminum you can forget about a rebuild. So when that maintenance guide says change the timing belt at 30,000 miles you can be sure your going to pay out the nose to change the belt then or the engine later. The engine in a1949 ford I was restoring weighed more then most of these little cars do today. But you can bet that old flathead V-8 is still running today with no major or expensive preventative maintenance for the last 65 years. Plus if you got tired you could throw a cot in with the engine and close the hood for a nap. Todays cars you need to remove a half dozen parts before you can even get the tools into what needs fixed. Can you say two baby steps forward and five giant leaps backward.

1 out of 1 people think this is helpful.

@PlumCrazyCuda - 50 leaps backwards. All we have today (90%+) are code readers and parts replacers. I needed to change the vacuum modulator on my tranny and asked on this site if anyone had changed a vac modulator with original style vs adjustable style and their opinion. I got ZERO responses. ( I had changed a cable modulator before but this was was first vac modulator.) I was hoping someone mighy answer but I didn't really expect more than one or two responses. When I asked the parts guy what he thought he did not even know what a tranny modulator was. My shop guy and three others said they had no idea what I was talking about. Well I fixed my vac modulator problem on my own. That's what interested me in trying to give fix-it-answers on this site. ....If you are interested in learning a bit about the new improved engines and their sensors and codes;then, go where I post below, You'll learn that the youngster mechanic don't even know the REAL REASON WHY all this c__p is on a car.


google: University of Michigan OBD and a heading "Introduction to On Board Diagnostics" comes up. Click on the one that shows group engin.und.umich


You can download it [no charge] and read it later. I read every page and then ran copies. There was not one single mechanic that had any idea about the truth behind codes and how the government mandated them not to make engine diagnosis better BUT 100% to monitor emissions.


Whats really wrong is the fact that the computers can be modified to change the performance. They can set optimal settings for best performance (gas mileage, power, etc) and with that type of control they can modify settings that will cause component failure over an estimated time period. Ever wonder why something expensive fails just after the warranty has expired. I had 2 expensive unrelated repairs done at 2 different shops. Each time I later had more expensive problems because the mechanic wasn't paying attention to what they were doing. The one repair was a radiator replacement on my truck. A few months after that was done I was driving on a highway in during busy traffic. I heard a faint pop noise and about 15 minutes later my truck started shifting strangely. When I finally managed to get to the shoulder and stop, about another 15 mins due to traffic and construction, I found I was low on Tranny fluid and noticed it was leaking. After having it towed home, I started working on it. I was disgusted to find the Tranny cooling line blew off the radiator. When I pulled everything apart I could see that the hose wasn't pushed completely on when the radiator was replaced. The fitting on the radiator was a double barb with enough room between the barbs for the hose clamp. From the marks on the hose you could tell that not only was the hose not pushed all the way on, but to make matters worse the hose clamp was tightened around one of the barbs. I guess I was lucky it stayed on that long. But of course the Tranny was now beat from the fluid loss. And the shop refused to acknowledge the mistake and litigation was pointless without enough proof. The other repair came after I had the transmission rebuilt at a different shop. In the course of doing the transmission job the shop called to tell me they noticed the water pump was leaking from the vent hole. So I just let them replace the water pump. Big mistake. After about 4-5 months I was driving home late one night when my truck started running hot. So I stopped and let it cool. I checked the radiator fluid and none was visable. So I filled it up, only to hear it pouring out the bottom on to the groung. Again had it towed home figuring a hose let loose. The next day I started checking it out and found the it was leaking from the water pump. After tearing it apart I found a water pump with no impeller inside. When I took it to the shop that replaced it they simple said they had no idea how that could happen. I always worked on my own vehicles but during that period I was working almost 80 hours a week and had no time. Now I make the time even if I have to let the car sit until I get to it.

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