Best exhaust for mpg? For a 3.1 v6.

I heard Y pipe or something and 2.5 pipe, 3" is too big

Can anyone link me or should I have a custom job by a exhaust shop ?

 

Every car I have owned since 1995 has had a K&N aif filter.

Everyone has had a documented increrase in milage.

Initial cost is more, but you NEVER have to replace it, unlike a paper air filter.

Many of the cars had MAF. Never had an issue.

HP increased on them as well.

I documented this with a 240sx at the drag strip on test and tune day. It was over 1/10th faster in the 1/8th mile with a K&N filter compared to no filter at all.

 

K&N filters DO NOT void warranties.

Have you ever used one?

I have documented milage gains on many cars. As well as gains at the drag strip.

 

So a hyper tech power chip are worthless right I'm going to return the one I bought

 

Will summit even take the chip back?

If its been installed, I would not think they would.

 

nope, don't want to, i think they're as much of a waste as E3 sparkplugs
and uh...... ahem
http://www.automotiveforums.com/t214...arranty__.html

http://www.challengerforum.com/f18/k...-warranty-193/

http://www.rx8club.com/rx-8-discussi...arranty-95388/

http://www.hotrodders.com/forum/will...ty-128837.html

http://forums.trailvoy.com/archive/i...p/t-62313.html

http://answers.edmunds.com/question-...nty-33219.aspx

when you use one on a newer vehicle and F your MAF in the A don't complain, its been documented that they do it, and no it won;t be under warranty when it does k&ns aren't worth **** to me, a filter that'd ruin my MAF void my warranty cost twice as much as a standard filter and not filter as well is worthless to me, "but it flows better" yeah well so does no filter at all but all you tards aren't taking them off completely.........yet

 

Pretty sure car manufactures look for any reason to void warranties. Also warranties on our cars are long expired. I did a little research on their filters here is a link and some excerpts from them: and no I'm not associated with them in anyway.

http://www.knfilters.com/filtercharger.htm

Designed to Increase Horsepower & Acceleration
K&N Million Mile Limited Warranty®
Washable and Reusable

Will NOT Void Vehicle Warranty
Lasts up to 50,000 miles before cleaning is required depending on driving conditions
Emissions Legal in all 50 US States.
Economical, a K&N Air Filter Will Last the Life of Your Automobile,
Motorcycle, or ATV
Works with Vehicle Electronics
Environmentally Friendly

K&N Million Mile Limited Warranty® and Consumer Protection Pledge
K&N warrants its street vehicle OE Replacement Air Filters for one million miles. When used properly and found to be defective, return your filter and the receipt from purchase and K&N will replace it free of charge. K&N’s Consumer Protection Plan goes one step further than its Million Mile Warranty. The performance aftermarket has, at times, been plagued by car manufacturers and automotive dealers that may attempt to discourage you from customizing your vehicle. They prefer you buy OE parts and not modify your car or truck and have even been known to void their own manufacturer’s warranty due to vehicle modification. That sounds un-American to us, which is why K&N and the Magnuson-Moss Warranty Act (more information here) protect consumers from such denied warranty claims. When you buy an OE replacement K&N High-Flow Air Filter or High-Flow Air Intake System you can be confident your vehicle’s warranty will remain in effect. If you experience a difficult dealership, K&N will resolve the issue so you won’t have to. The following summarizes the K&N Consumer Protection Pledge:

K&N pledges to our customers that they will not be taken advantage of and charged for a repair due to a dealership warranty denial blamed on the presence of a K&N product..

ENGINE PROTECTION LIMITED WARRANTY
Unlike many companies, our warranty for O/E replacement air filters and intake systems does extend beyond the replacement of a defective K&N part. For the original purchaser of the product, our warranty covers any engine damage or related costs incurred as a direct result of the use of a properly installed and maintained K&N O/E automotive replacement air filter or intake system on the specific vehicle for which the product was designed to be used by K&N. This includes reasonable vehicle repair costs directly related to an engine problem caused by the failure of a K&N product. Furthermore, we warrant that using our product will not result in a vehicle warranty denial. K&N will not be responsible for any indirect, consequential, special, contingent, or other damages not listed above.

We will promptly reimburse the consumer for the cost of the repair if a service provider denies warranty coverage as a result of a K&N product or claims that a K&N product has caused harm to your engine or vehicle. In order to receive reimbursement, we require each of the following:

The consumer must provide a written statement or repair order from the dealership or service provider in which the dealership or service provider blames the problem or warranty denial on a K&N product;
The service provider or consumer must provide K&N with all allegedly damaged parts. Many states have laws that require a service provider to retain all parts replaced during a vehicle repair, unless given consent to dispose of the parts by the consumer. K&N will pay the shipping cost to recover these parts; and
The consumer must provide proof of purchase of the K&N product along with cooperation in helping us investigate the claim.

Once these steps have been completed, K&N will contact the service provider and collect evidence to support their claim. In the event we are not provided with sufficient evidence, we reserve the right to reject the claim and will use our best efforts to assist in establishing your rights toward the service provider under warranty or other provisions.

 

I doubt any of use "tards" here have warrenties on our 3rd gens anyway.

 

With more flow comes more dirt. You might as well run with no filter at all.

 

the differences in flow/filtering are negligible at best a filter is a filter doesn't matter the name brand or whether or not its oiled cotton or paper http://www.bobistheoilguy.com/airfilter/airtest3.htm

http://www.bobistheoilguy.com/airfilter/airtest2.htm

http://www.bobistheoilguy.com/airfilter/airtest4.htm

 

I stopped using K&N filters years ago when I started reading about dusted motors. Was abig issue on turbo diesels. Don't beleive everything I read on the net but one test was hold a drop light inside filter and look at light coming through. Both my K&N filters had big holes of light in several spots!!!

 

http://www.ddmtuning.com/Products/E3...D-Kit-included

This looks like the best deal not cheap crap from eBay.

So I'm going to get the

E36 DJ euro headlights (hid kit included)

HID: DDM 55W
Color: 8000K or 10000K or 12000K ?
Angel eyes: white LED


So 250$ looks like great material not cheap like ebay

About to order any suggestions ?

 

The K&N will trap more dirt,but I think the cheap paper filters will flow more air.

 

IT has been my experince that a K&N filter will result in more milage and horsepower. I have documented it on everything from a Nissan 240 to a LT1 camaro to a RX7 to a hundyi elantra to a Mitsubishi Mirage to a 1 ton 454 truck.


Better milage everytime.

Quicker ets compared to No filter at all.

 

I used DDM tuning HID on my 69 C10. I went with 8oook and they were pretty blue. WOuld not go any higher.

Probably wond to much for gas milage though.

 

Better fuel mileage?

higher air pressure in tires.

Turn on highway mode in your .bin. Over a certain MPH(30?) it enleans the mix and may add a tad of timing. The general turned it off for emmishions so i read. I have it on currently and I recall I had to change the .bin to do so.

 

that's fine that you documented it, but how did you test it? by replacing a dirty old air filter with a new k&n? or a new still clean oem filter with a k&n and having an indicated (either by doing the math with your odometer or documenting your mileage every fill up) or are you just claiming it gets better mileage

 

New oem vs new k&n, back to back milage testing, I document milage on every car at every fill up, a bit ****, I know.

Recent example was the Hyundai Elantra, 1.6l. Averaged 28 mpg through several tanks of gas, on my daily commute to work. Changed to a K&N , average jumped to 32 mpg. Through several tanks of gas.

I also did back to back testing at the local drag strip on test and tune day.

Run with stock filter, cool down, run with no filter, cool down, run with k&n.


I also worked in Parts sales for several years, I offered to personally refund anyone's k&N filter if they did not see an improvment, never had one come back.

What testing have you done?

 

none, just studied the tests that are out there, seen the legal disputes between car manufacturers and k&n and that's enough reason for me not to use one, its had an oem style paper filter for almost 30 years, its perfectly fine that way.

 

I too have seen milage and power improvements when using a K&N over paper filter, or no filter at all.

The problem from K&N filters is not because it's a K&N, it's because people over oil the filters and the excess oil can cause issues with the MAF sensor. A properly oiled filter will not cause any issues.

GM was forced to turn off highway mode by the EPA.

 

So you used the stock intake plumbing?

 

On the Hyundai? Yes. Just dropped in a stock replacement K&N.

 

The chip actually did damage to my car 3.1 v6 now i have a bad valve...

 

Are you sure your base timing wasn't to far advanced ?

 

It was running too lean with the cheap and too hot and i had already 250k on it and damaged a vavle

Because it will die unless i give it gas :/ i thought it was a simple vacumm leak but no engine light. It came one once yesterday but if i turn car on off it goes away. Does t come back


My timing was set perfect at 10

 

can you even damage a valve without the timing being off? i can't think of a way

 

You were modifiying an engine with 250,000 miles on it and it failed. It was not the chips fault.

Aftermarket chips are set up very conservetivly for this very reason.

 

not sure what you have done to confirm a burnt valve, compression/ leak down ? Sounds like you were driving the car ignoring a more serious issue like bad I injectors running the car to lean. I wouldn't be to quick to blame hypercraps chip it probably just has wot timing changes and was a waste of coin to begin with.

 

I agree

 

I thought i damaged a vavle but my egr was coming off.. I used lock tight for the screws i have never seen the egr come loose like that.

I thought it was a vavle because the way it sounded.




Sorry i made an assumption

 

Ah, so that's why it was set at 255mph in the bin. I wasn't sure I was messing with the right parameters when I saw that. What kind of gas mileage improvements have you seen from enabling highway mode? And, are there any issues running at such a lean AFR? I've read that leaning out the AFR too much can cause problems.

 

I dont see any issue enabling it. May increase emishions however. HY mode is low load so if you are thinking detonation it should not happen. Did not for me anyway at 16.5-17.0 on WB. If you run can too lean the mixture may not ignite.

Yes it improved gas mileage along with DE and DFCO all enabled.

 

Forgive me here, but DE and DFCO (something fuel cut off?)? I've heard that running too lean causes higher temps, burning oil, and potentially valve or piston issues. I'm sure the latter are very unlikely and resultant of excessively lean AFR mixtures, though. I'm not sure what constitutes "too lean" either. Something tells me that if GM initially had the AFR for highway cruising at 16:1, it should be fine to run it near there with only emissions to worry about, but I just wanted to get others' thoughts.

 

My car has oil temp reading and of course engine coolant. Analog gauge. I noticed that in HY Mode I am about 2-4 deg higher in coolant temp and oil temp appears the same if not a fraction higher.
Low load conditions.

DFCO is deacelleration fuel cut off. 0% TPS. A/F goes right to 20/1...

 

That makes sense, thanks. And what about DE?

 

On deacceleration the fuel is sheared off the wet manifold so DE reduces the enrichement that occurs as a result. I presume DE is when the TPS% is> zero. Even with DE "on" enrichment occurrs.