Post by: KELTICKNIGHT on May 04, 2006, 10:54:16 PM
getting ecu remapped next week
would k&n filter make much of difference
Post by: MOCAJ on May 04, 2006, 10:57:34 PM
K&N makes a difference on our TJ, interested how all this works out on the Liberty.
Post by: Anonymous on May 04, 2006, 10:59:20 PM
Try
Yates & Bloomfield
www.ybfilters.co.uk (http://www.ybfilters.co.uk)
Post by: KELTICKNIGHT on May 04, 2006, 11:03:46 PM
would it be better to get filter before remapping or does it make any difference
Post by: Anonymous on May 04, 2006, 11:06:44 PM
nope
Post by: KELTICKNIGHT on May 04, 2006, 11:09:58 PM
filter wouldnt give any ,if any ,very little in bhp ,only better mpg and airflow
Post by: Anonymous on May 04, 2006, 11:24:40 PM
Turbos suck air in as they need it... and as the turbo units usually have the same air components as the N/A engines, they have plenty of air flow. only reason to get a K&N or other cleanable filter is to save money when offroading as you'll need to clean it often as well.
EE
Post by: KELTICKNIGHT on May 04, 2006, 11:38:38 PM
cheers
Post by: greggmo on May 04, 2006, 11:49:19 PM
Post by: Anonymous on May 04, 2006, 11:55:16 PM
*Blows raspberry and runs*
Post by: tim_aka_tim on May 05, 2006, 12:00:42 AM
Post by: Anonymous on May 05, 2006, 12:06:28 AM
BP Ultimate diseasal is slightly better but the cost is higher too and found it not worth the extra hassle of where our local garage is.
A certain Texaco service station between Paris and Calais sells really crap diesel... Paj was stuck at 60 on the way home... Thought I have knackered the engine or something on it till we put some Shell in this side of the channel and she picked up immediately! This year we made sure we stopped wherever there was a BP or Shell or even Esso at worst.
Nutty car likes shell Optimax too.... Girly hates the nutty car with Optimax...
TJ Loves optimax for performance, but doesn't seem to do a lot for the MPG :)
Post by: greggmo on May 05, 2006, 12:13:22 AM
Post by: Anonymous on May 05, 2006, 12:14:52 AM
Post by: greggmo on May 05, 2006, 12:16:48 AM
Post by: Anonymous on May 05, 2006, 12:27:28 AM
Get the air intake out of the engine bay too....
Course, then you want a mister on the cooler as the water provides a faster cooling medium. Pity that you can't "Mist" the diseasal too.
Post by: KELTICKNIGHT on May 05, 2006, 08:43:00 AM
Post by: Anonymous on May 05, 2006, 09:45:16 AM
A turbo is a "Forced Air Induction System" the exhaust spins a turbine that in turn runs an air pump on the inlet side.
IMHO I agree with Lardy about the intercooler, but think that a K&N on a turbo is really going to give an insignificant improvement.
Saying that, at least the K&N mod is only ~£40.... Or, if you are not likely to go offroad, I have a K&N cone filter here too that fits sweet on the end of a TJ air tube (I guess the cherry is the same) that I bought before fitting my panel K&N in my N/A 4l. You can have it for £15 + postage (What I paid). And it gives you a lovely induction noise :)
EE
Post by: KELTICKNIGHT on May 05, 2006, 10:06:45 AM
Quote from: "EvilEd"
Nah, get a larger intercooler to cool the pre-charged air. I know Lardy took the P out of the link, but that site is great for explaining how things work in terms suitable for anyone. and when you get to the later pages, they discuss some of the putfalls and returns for mods.
A turbo is a "Forced Air Induction System" the exhaust spins a turbine that in turn runs an air pump on the inlet side.
IMHO I agree with Lardy about the intercooler, but think that a K&N on a turbo is really going to give an insignificant improvement.
Saying that, at least the K&N mod is only ~£40.... Or, if you are not likely to go offroad, I have a K&N cone filter here too that fits sweet on the end of a TJ air tube (I guess the cherry is the same) that I bought before fitting my panel K&N in my N/A 4l. You can have it for £15 + postage (What I paid). And it gives you a lovely induction noise :)
EE
will it fit a kj
Post by: Anonymous on May 05, 2006, 10:10:36 AM
Post by: prozac on May 05, 2006, 12:59:19 PM
Quote from: "greggmo"
turbo,s dont suck air they reburn exaust gasses. superchargers suck air and force it at pressure into the throttle body. i think the k and n will make a small improvement at least.
I thought they were powered by exhaust gasses, spinning a turbine, which pushed more clean cool air in.
Post by: Mike Pavelin on May 05, 2006, 04:54:07 PM
The 2.5 KJ produces maximum usable power between 2 and 3000 RPM so can be a bit slow on the uptake. The 2.8 KJ has a variable geometry turbo, which eliminated turbo lag by behaving like a small turbo at low engine RPM, and by tilting the angle of the vanes inside, reverting to full capacity at higher speeds.
Post by: MOCAJ on May 05, 2006, 07:22:13 PM
Not sure if this re-mapping works, if i was you i'd check vey carefully with someone who has had it done.
You don't want to get rid of the lag and then get 10-15 MPG :?
Post by: KELTICKNIGHT on May 05, 2006, 09:42:08 PM
Quote from: "Mike Pavelin"
Basically a turbo is a supercharger which is driven by the waste energy generated by ejecting the exhaust gases from the engine, making it a very efficient way of improving performance. Most turbodiesels use exhaust gas recurculation which recycles some exhahst gas into the inlet in cruising conditions in order to reduce emissions. An intercooler cools the compressed air exiting the turbo before it enters the engine, giving a more dense charge of air, and more power than if it came hot straight out of the turbo.
The 2.5 KJ produces maximum usable power between 2 and 3000 RPM so can be a bit slow on the uptake. The 2.8 KJ has a variable geometry turbo, which eliminated turbo lag by behaving like a small turbo at low engine RPM, and by tilting the angle of the vanes inside, reverting to full capacity at higher speeds.
mike ,your a wis with info,remapping so help flat spot a little
Post by: KELTICKNIGHT on May 05, 2006, 09:56:57 PM
Quote from: "KELTICKNIGHT"
Quote from: "Mike Pavelin"Basically a turbo is a supercharger which is driven by the waste energy generated by ejecting the exhaust gases from the engine, making it a very efficient way of improving performance. Most turbodiesels use exhaust gas recurculation which recycles some exhahst gas into the inlet in cruising conditions in order to reduce emissions. An intercooler cools the compressed air exiting the turbo before it enters the engine, giving a more dense charge of air, and more power than if it came hot straight out of the turbo.mike ,your a wis with info,remapping so help flat spot a little
The 2.5 KJ produces maximum usable power between 2 and 3000 RPM so can be a bit slow on the uptake. The 2.8 KJ has a variable geometry turbo, which eliminated turbo lag by behaving like a small turbo at low engine RPM, and by tilting the angle of the vanes inside, reverting to full capacity at higher speeds.
there 3 types of remapping
1 is downing the ecu to give beter mpg
2 is mid remap whick gets rid of flat spot and give better mpg
3 is more power and performance
will be getting the second one
one of the guys got his 2.5 kj done with 2 ,got rid of some of flat spot and not all ,got 30-40 extra miles out of tank,been told these kj 2.5 are designed this for better offroading and going through rough areas
Post by: KELTICKNIGHT on May 06, 2006, 12:07:49 PM
Quote from: "Mike Pavelin"
Basically a turbo is a supercharger which is driven by the waste energy generated by ejecting the exhaust gases from the engine, making it a very efficient way of improving performance. Most turbodiesels use exhaust gas recurculation which recycles some exhahst gas into the inlet in cruising conditions in order to reduce emissions. An intercooler cools the compressed air exiting the turbo before it enters the engine, giving a more dense charge of air, and more power than if it came hot straight out of the turbo.
The 2.5 KJ produces maximum usable power between 2 and 3000 RPM so can be a bit slow on the uptake. The 2.8 KJ has a variable geometry turbo, which eliminated turbo lag by behaving like a small turbo at low engine RPM, and by tilting the angle of the vanes inside, reverting to full capacity at higher speeds.
mike
what you think of remapping to reduce pickup,it not a full remap,only on pickup
Post by: KELTICKNIGHT on May 06, 2006, 12:14:25 PM
Quote from: "my other cars a jeep"
Dr Mike is bang on ( as usual ), had a test drive the other week and that turbo lag is not noticeable in the 2.8. I drive the 2.5 daily.
Not sure if this re-mapping works, if i was you i'd check vey carefully with someone who has had it done.
You don't want to get rid of the lag and then get 10-15 MPG :?
was on to the people that do remapping in dublin
giving me a mid remapp which only improve pickup,alittle more toque and extra bhp,its not a full power remapp,can get if l want it ,but l don't
will be getting done next thursday and let you know,what good about remapping,you can change back to first setup
Post by: KELTICKNIGHT on May 12, 2006, 04:15:49 AM
it feels like a 3.0 jeep rather than 2.5