Patrol 3.0l 3" exhaust

G'day Leroy,

I have a 1995 Nissan patrol RD28TD 2 weeks ago I had the standard (I think original) muffler replaced with a straight through sports muffler. Now I realise this is not a 3 inch system, but I think would be similar in results.Also I have been told on several occasions that the standard muffler on the turbos is the same one fitted to the petrol engine....... way too big!
Friday night I did a run with a 4wheel drive club in Perth, roughly 85kms in the dirt (4 high). I am still on the same tank, as of today I am a touch in front on my kms (from before the change and no off road). The biggest change is in the power.......wow, truely it is like a new engine, its not possible for me to give you accurate figures, but if I guess, its something like 30%. Noise increase......... a little, not enough to worry, there is a very gentle hum out the back, (turbo removes most). Not enough to draw attention. Only downside........... she's a little harder to start, which is annoying, due to less back pressure? (like a lot less). hope this helps....... once I do a full tank to tank on the road, I will be able to give more accurate fuel consumption.
Lawrence

I would think that with Diesel designed headers/exhaust systems etc, the improved design would be complete with header/dump pipe and cat etc. The location of these is critical and I believe with diesel doesn't necessarily tie in with petrol designs. I have only spoken to an exhaust expert socially but it seems there don't seem to be an array of experts in diesel exhaust systems. Good results have been found with turbo diesel engines in testing, but not sure if this applys to more modern designs like the Dtronic. I would think the same questions could be asked about chip upgrades for turbo diesel vehiclles like the Navara and Hilux, there are impressive claimed gains but I don't here about a lot of testimonials in this area. You may be best served by ringing some reputable exhaust systems specialists and asking for opinions..?

G'day Leroy'
If you go to the top of the 'forum index' page and type in "patrol exhaust" in the 'search' section and set date back one year you will have more testimonials from members than you know what to do with. Try the same thing for "D-tronic" and we'll hear from you in a few days when you have finished reading.
Not trying to be smart or sarcastic, just trying to help as a lot of people don't know how to use the 'search' function, or even know it's there, as Trucky says "search is your friend".

Avagoodn
Perry

There is an exhaust expert that has joined OLimits, with a thread in the Techo forum.

Ask him his advice, he is assisting dozens of queries on all sorts of combos.

I have fitted a new 2.5" exhaust to my 03dx 3lt it was made by 4wd systems in S.A good fit easy to do your self,car pulls better from 1000rpm to 4500 no lag now, also much better on hills with camper trailer on, not sure yet about fuel saving's but over all a nicer car to drive more relaxed.
Cheers
Den

yes it spins up a bit better no lag between gear change now , a reasonable increase in tourqe by my seat of pants testing, hills that i used to change down on before I don't have to now and passing on the hwy a bit better with trailer, and a rocket with out allmost toying with getting a Dtronic.
Dirty Patrol

I don't have a bigger exaust only the standard one but I have used both the dtronic an steinbauer p-box if you want to speak to someome with personal experience of having used both units. Check out my comments in post 31845.