do the 2.7 power adder and we can work on the other stuff

 

Great list of performance info. Thanks to all. One suggestion I have is adding the R/T brake upgrade for the 3.5L. Thanks

 

I have a 2008 SXT that has dual exhaust. I bought the car used so I am unsure if the SXT came stock like this or if the guy before me changed them. The mufflers look stock so is it possible he swapped the system from an R/T? let me know if there is a way to tell the SXT exhaust system setup apart from the R/T setup.

I want to start doing mods to the car and if I already have the R/T exhaust then it could save me a lot of money

 

The SXT does not come with dual exhaust, so someone added it for you. That being the case, you're a lucky guy. Not delete the rear resos and add some tips and you love the sound. Have fun.

 

^ The SXT's came stock with a single exhaust. The stock, RT dual-exhaust is practically a bolt-on for it, so that's most likely what's on your car. Check the V6 Audio/Video clip sticky for lots of exhaust ideas and sound clips. I have the regular Magnaflow dual-exhaust on mine now and I like it. It is one of the quieter setups, but still has good performance.

(and it's about 50 lbs. lighter than the stock RT exhaust system!)

 

Well since I am balling on a budget, is there a way to really tell what I have? If it is the R/T exhaust is it pretty comparable performance wise to other aftermarket systems? Also, if it is good for now what kind of tips should I get to add a better sound to it and by resonator do you mean catalytic converter or something else?

 

The thing about the R/T exhaust is that it's a true dual exhaust system with an "X" pipe. The "X" pipe is suppose to help out with torque, so you're going to get some power out of it. Once you open that engine up with mods to make it bring in more air, you get even more performance out of it, especially if you put a SuperCharger or a Turbo Charger system into the picture.

The reso's are the rear mufflers at the back of the car. I don't have any recommendations for any tips, but get some that will make it look good. The sound is pretty good from what I've heard on video clips. This is one of my future mods.:alfdance:

 

You won't notice much of a difference other than sound by changing anything on the R/T exhaust you have on the car.

 

^ That is correct. Sorry, I didn't mean to imply that you'll get higher performance from the RT exhaust. The stock system is pretty restrictive, very heavy, and designed to be quiet and have no drone at all. Any performance gain is small. It's just the easiest and least expensive way to get a dual exhaust on the V6.

 

Anyone have the diablosport predator tuner for a 3.5? I am trying to get a legit picture of what I can expect.
Also, has anyone ventured into changing out their spark plugs yet? I was looking to upgrade them to iridium sparks plugs, most likely NGK. On that note, wondering if anyone had ventured into fuel injectors? I would like to upgrade thoses as well since I am going to eventually turbo charge my car, and the stock fuel system is normally the first thing to get taxed hard from it. Plans were to do an upgraded fuel pump, fuel injectors, and possibly a fuel return system.
Not trying to turn my V6 into a race car because, face it, trans would boil itself to death, and the rear end would probably self destruct if you took it for one hard lap around a track. I just want to make something that is fun to drive, and show that my American/Canadian v6 can perform like the Japanese cars. I have a lot of respect for the Japanese v6's. Unfortunely, and its sad, but America thinks v6's are just for family cars. Looks at the 370z and the R35, absolutely sick cars. At least Ford has shown some respect toward the v6. Twin turbo taurus. Still in the Taurus? Really? Why not put that platform in the Mustang? GM's, in my opinion, last successful attempt at V6 power was the Buick Grand National. Turbo V6 in the 80's, but nothing worth while after. The supercharged Monte Carlo's were a joke. I drove one, and that was with a supercharger? Glad I didnt waste time on a standard V6. Dodge, we all know your in the hole, but come on, be innovative. A turbo V6 Challenger would have been nice. Just because it's not a V8, doesnt mean it cant impress. I would love to see an American engine (beside the LS1) that is used in engine swaps the same as a Toyota 2JZ engines (Supra). Sorry for my rant, had to get it out. Haha

 

Do some searching first in the thread, tons of information is already readily available about the Predator. And about your American V6 comment being that most think it's for family cars. What about the Plymouth Prowler? Hardly a family car. The new Dodges and Ford are improving all of the V6ers for 2011, and don't forget we still have the new Camaro which is no slouch either. Also understand, the cars you mentioned are all coupes not full sized sedans. For the rest of your questions you may be better off making a thread for it. :beerchug:

 

Wow. Quite a post.

Practically everyone has the predator and it's awesome. Acts as an idiot-proof tuner/data logging unit. You can adjust the tunes but only over a wide range like 0-3800 rpms spark and fuel, 3800-5000 spark and fuel, and 5000-7500 spark and fuel. (not sure if these are the correct numbers but they're close enough)

Spark plugs are a PITA the change since you have to remove the upper intake manifold to get to them, and as such, there is little info about them. Same with the injectors. It seems like most of the supercharged applications are using the SRT8 injectors since they are 32 lb/hr over our 24 lb/hr injectors. You may or may not have to change out the fuel pressure regulator and the pump.

If you have the NAG1 5 speed transmission you should be fine with any power output you can get from a turbo on a stock 3.5l without any internal modifications since it's the same transmission used in the HEMI's. The rear end can be swapped out for a challenger LSD and give you a fairly bulletproof drivetrain. Costs $$$ but it will make your V6 a race car. :beerchug:


Can't beat an LSx block for engine swaps though. I've got a buddy that swears by the 2J but I'm more of an american muscle guy... :biggrinjester:

 

Thanks for all the responses. I wasn't downing the potential of the V6, just expressing how angry it makes me that it seems the societial norm is "if it's not a V8, screw it." In my opinion, there shouldnt be as much of a problem finding performance upgrades for any v6. The horsepower, torque, and fuel economy that can come out of a V6 is amazing. I just wish there was more emphasis on it. American Muscle shouldnt be limited to just the v8. It the older generation that saw the birth of the american muscle car. Irritates the hell outta me. I went to a few performance shops, and if it was not the v6, they didnt touch it. They all forget about power and reliability on a budget!

In reference to the Prowler, it had a 3.5 v6 to power it and 214hp. Take into account the 370z, 332hp and 270ft/lb torque from a 3.7 v6. Where is that in American cars?
Camaro? Mustang? Charger? Challenger? Which stock American v6 could keep up with a 370z? None, they all would get dusted. Thats my point. They need to get some new blood in the big 3. Ford has shown some good stuff though. Chevy is trying. Dodge is starting to dissapoint me. Which sucks. But do not doubt me. I love my car. Everything about it except the damn check engine light (code p1004, short runner valve performance, and my dealership I bought my car from closed and the dealership I am now going to, per a letter from chrysler is a pain) and the weight. Its a heavy car. But the scary part is that my buddys GTI is almost the same weight!

 

I see what you mean charger35v6. Also note that horse power isn't the only thing, the torque and gearing too, I've driven the Prowler before that sucker is fast and the one I was referring to was the 253hp. But like I said, I definitely see where you're coming from.

 

+- 100RWHP.... I like that... It makes everything sound better when it's all within 100!!! lol

Good thread though, sounds like typo cuz I've seen some numbers that are from pretty reliable sources for those setups that are pretty close to yours, probably +-10 rwhp...

Gotta be someone that has done more to a V6 though... boost wise at the very least I'd think you could get 3-350 out of it, ricers are getting that out of 4 cylinders and more!!!

I know with the "Easy" upgrade to V8 there is a lesser crowd that does it but I know there have been plenty of threads here over the years about it, just surprised nobody has "gone big"

 

Nope, no typo. I just didn't want to deal with people posting about how they weren't gaining any horsepower blah blah blah.

There's a few guys over at LxForums who are putting serious numbers down in their 6's. The supercharged guys put down 300 and the stroker guy(s) is putting down around 260 to the wheels. I figure once those two are installed on the same car we're talking around 400 rwhp then up to 500 with some nitrous.

Just need a spare $25k laying around....

 

Hey Brad, back to the fuel injectors, do you know of or heard of any aftermarket injectors besides just doing a srt-8 swap? How many cc's are the srt-8's?

I have not written or called STS lately, any updates on a kit made for the 3.5 yet? Many months ago when I sent them something, the guy (name escapes me) told me they were working on it and it would take time but they didnt forget about the 3.5.

And at least I got some more posts going on this again!

 

http://www.chargerforums.com/forums/showthread.php?t=125031&highlight=fuel+injectors

I started a thread a little while back hoping to understand more about the 3.5l fuel injectors. I'm far from an expert so hopefully the responses in this thread will point you in the right direction as far as aftermarket injectors.

As far as the STS turbo. I'm fairly certain (as in 99% plus or minus 1% :biggrinjester that they don't yet make a turbo kit for the V6 Charger. I'd like to see someone dyno a turbo'd charger though since the only turbo'd V6 I've seen is now selling his kit...

It sounds like you know quite a bit about turbo's so I have a question for you.
Would a twin turbo system be worth it on the V6 charger? I have been under the impression that it would be too complicated, cost too much, and show too little gains over a big single, especially since this is a relatively low horsepower application. (compared to an SRT8)

 

Brad, I dont know that much about turbo, still learning a lot. But my friend, and everyone I hang out with drives an STI, WRX, and the lonely GTI. I am the only one in the group rocking an American 6-banger. So I have been picking up a lot of them, my best friend knows his stuff, and he hangs out with Subaru performance guys, been in a few magazines, Agile Auto. Anyways, from what I gather, to put a twin turbo on a charger would not only be a waste of $$$ but also potentially destructive. The higher compression you get from twin turbo and the HEAT from it wouldnt be that benficial considering our engines are not made to take that kind of compression. Those Japanese 4-bangers are throwing out number with their turbo because they were designed for them. Our rods, cranks, pistons, manifold, etc, werent designed with forced induction in mind. So to be safe, reasonable, and little more affordable, and without destroying your engine, the single is the way to go. As I said before, check out the Dsport issue on single vs. twin turbo. very helpful even though its an import magazine. I post what issue it was once I can check it out. Even running with a single, I doubt you could go any higher than 7psi of boost without the chance of doing serious engine damage. Hopefully that answered the question

 

You can run twin turbos at low boost. Just because you have twins, doesn't mean you have to run high boost. Not sure if it would be any more efficient with two. And for the heat, that's what intercoolers, meth injection, or nitrous is for.

 

Exactly.

I also hang out with a bunch of FI guys who talk about turbo's all day long. Their opinion was that a single turbo would show larger horsepower gains and be cheaper than a twin turbo system. Although a twin turbo would generate a flatter power curve.

Again, don't let them fool you into thinking the 3.5l v6 is a weak engine. The bottom end is forged and I believe at least one person is running 10 PSI of boost on stock internals without any trouble. I'd personally hang around 8 if I did some kind of FI. The modern muscle supercharger uses a meth injection kit.

Also, don't forget that the charger has ~ 50-50 weight distribution and handles quite well for the land yacht it is. I find it very easy to drive through the twisties. It's built to be a family sedan but it's far from a toyota camry

 

The whole point of the rear mounted turbo system is that there is no need for an intercooler because it has to run the length of the pipe, which helps to cool it. Plus with the rear mount your not messing around with your exhaust manifold, and dont have to worry about heat issues that are created from having the turbo mounted by your engine.

In reference to the supercharger, havent tried anything with modern muscle, but the whiplash system, that guy is a joke. He wont answer any questions. I sent him the same list of questions I sent STS, all he did was send me back an email that said call me. I did that and all he did was try to sell it not answer anything.

I dont doubt that the 3.5 is a strong engine. I just take into account that every company, no matter what the product, take the path that costs less $$$ for them. So I try to look things through before i do anything that is going to cause damage. Again, I like my car and want to keep it. I want to hang onto it when one day my charger is considered a "classic" car.

 

Our engines can handle a good boost of about 8 psi, but to get more, change out the pistons to forged and you should be able to get almost twice the psi than stock.

Also, the intake manifold is our biggest choke point for air. Unless someone understands the mechanics behind the stock, they could build an aftermarket one to allow more air into it.

 

DO they make a 2.7 cam that is worth getting? Nothing crazy aggressive just something to give the car a little more pull. I already have a AEcarbon tb B&G reflash and catback on the list but just wanted to see if there were any other good bolt ons for the 2.7.

 

Motivation!

And here is why we mod. our six-shooters!

New Jersey Motorsports Park, Thunderbolt track, Monday March 29 in the rain!!

AWD FTW! :banana: :clap:

http://www.youtube.com/watch?v=1qml8nxPAuY

 

What did you have the whole family in the car with you while racing lol.

 

Nope- that was my instructor.

 

Nice video Ron! To bad it was raining, I feel like it would be more fun in the dry.

You'll have to get a camshaft custom made for the 2.7l.

 

FWIW, most cams bought are "custom" made. The one in my truck is a custom grind. Usually just tell the shop what it's going in and they will get a blank and grind it to the specs you provide. Not sure on the availability of cam blanks for a 2.7L, but if you could get a used one you could get it re-ground.

 

Not worth it I was just looking for quick bolt on umph. I'm a diesel mechanic so labor isn't a issue just parts.

 

Technically not thing that you see in here, but question about wheel sizes, but since I am looking for performance wheels, and not chromed out, 22", heavy wheels figured I would ask it here. I am looking to upgrade to 19-20" wheel. What the maximum width I can go without issues? 10" too wide? And not doing staggered fitaments. I can't afford not to be able to rotate my tires. What offset should I go for? Whats the maximum offset I can go?

 

good question im looking for the same
how much heavy over stock starts to impair the existing performance