I own a 2000 chrysler concord. I enjoy driving this car but im looking for a little more hourse power out of it. I know this engine has all sorts of emissions devices that im sure limit performance. Im looking to go about this on the cheep. Im considering things like K/N high air flow filter, choppin off the catalytic converter, less restrictive muffler, pos. chip? Im very mechanical so if anyone has any ideas on how to pep up a 2.7 on a budget without killing the moderate gas milage, or even ways to improve the milage. let me kno, much appretiated!

 

rip out that POS 2.7 and install a 3.5. that's the ONLY way to improve the performance. however you can have more power and more fuel mileage... that goes against general physics. the more Horse Power you have the more hay you need to feed them.

 

Hello,

I have an 01 Concorde and my BIL had an 02. Basically the same car, but there was significant chenges to the engine tuning and pollution equipment. On my car I had hoses running throughout the engine compartment. The 02 had none. If you can find some engine pictures from Ebay listings you'll see what I mean. Also, my BIL's car was derated to 190 HP from 200 in the 01. His car accelerated better and seemed to have better mid range torque. I would look into these subtle differences as a way to wring better performance from your 00. Probably cheaper to replace and reprogram an ECM than to swap a 2.7 for the 3.5.

Bill

 

Hi Bill,
Thanx for the advice. Most ppl just tell me im skrewed and drop on a 3.5L. I got a couple questions tho. How whould you go about reprogramming an ECM? Would it be easyer to chop a ECM out of a wreck at a bone yard? Also which of the 3 muffler looking things are the muffler... i kno there 2 resonators, but im not sure which two those are?

Thanx again,
Chase

 

Hello,

On the general forum area, there is a discussion on the 2.7 engine. Apparently, Chrysler made subtle changes to these engines each year so that if you don't have the package perfect the engine won't even start.

I know that a couple of years ago, a mechanic on ebay was offering to swap the 2.7 with a 3.2 for about $2.5K It was somebody in Tenessee. Since that engine was offered as an option in the 00 and 01 years, maybe that would be a more economical way to go?

I apologize that I can't be more help...

Good Luck,
Bill

 

I remember seeing someone with a 3.3 conversion. Sometime when I have nothing better to do, I might just try that myself.

 

Putting in the K&N filter along with a cat back exhaust are the only things you can do to that motor. Aftermarket performance parts were not made for that engine as it was the base motor. Performance parts are made for the 3.5L. Also like one of the previous people posted that motor was designed to work with all the compnents in place and eliminating items will only give you trouble with the car running. Also be sure you change your oil very frequently on the 2.7L there were many problems with sludge build up on these because the oil ports are too small so if you let it go too long for a long period of time they sludge up. Used to see them come in the dealer between 60-75K knocking really bad.

 

That has been proven that it was oil based a GSH4 grade oil which chrysler was using and alot of other car makers caused the sludge scene 2005 now everyone uses a GSH4 oil and no sludge. Army core of engineers did a test of 150 different engine all using same grade of oil and they all sledged over time used the GSH4 style oil and no sludge.

 

Update to this post

TSB: MO-2005-08-29
Date: 8/29/05
Revision: 12/8/10
Product Description: All AMSOIL Synthetic Engine Oils
Subject: Using AMSOIL in engines with possible sludge issues
Technical Service Bulletin
OBJECTIVE:
Inform AMSOIL customers that, according to OEM letters
and Consumer Reports, the engines identifi ed in this bulletin
appear to be prone to sludge. The use of AMSOIL
Synthetic Motor Oils at regular drain intervals established
by the vehicle manufacturer will reduce the likelihood of
sludge formation, provide the best protection and insure
the vehicle manufacturer honors owners’ extended warranties.
ISSUES:
Engines from four different automobile manufacturers are
candidates for possible sludge problems. To satisfy customers,
Audi/Volkswagen, Lexus/Toyota and Saab have all
extended their warranties to eight-years/unlimited mileage.
Chrysler/Dodge is the only manufacturer without an extended
warranty program and handles claims on a caseby-
case basis.
Provisions of the extended engine warranty coverage include
changing the oil within the OEM-recommended interval
and documenting proof of maintenance performed
to the engine.
TECHNICAL DISCUSSION:
Sludge formation is caused by oil being subjected to abnormal
operating conditions such as high heat, excessive
blow-by gasses, glycol contamination or poor crankcase
ventilation. Sludge formation, if severe enough, can block
the oil passages and oil pump pick up screen, resulting in
oil starvation.
AMSOIL Synthetic Oils have better oxidation resistance,
detergency and dispersancy than conventional petroleum
oils, and they do a better job of resisting sludge. However,
they will not stop sludge formation under abnormal engine
operating conditions. The use of synthetic oil for the best
possible engine protection is endorsed by many of the engine
manufacturers listed.
Submitted By: DW Reviewed By: DP Approval Date: 12/8/10
Distribution: Internal All X
Page 1 of 2
AMSOIL INC., 925 Tower Ave., Superior, WI 54880 (715) 392-7101 © Copyright 2010
RECOMMENDATION:
Purchasers of used vehicles listed in Table A should take
extra precautions to protect their purchases by reviewing
maintenance records or requesting an internal engine inspection
prior to purchase.
Follow regular OEM-recommended drain intervals with the
appropriate AMSOIL Synthetic Motor Oil for cars prone to
sludge. The AMSOIL XL and OE series oils may be a
more cost effective option depending on personal preference.
Keep accurate records of all maintenance, engine inspections
and oil/fi lter changes, such as receipts from quick
lubes or proof of product purchase and documentation of
installation for those who install their own oil.