3.0 TD exhaust mod

[jayden Lurker Find all posts View Profile Close jayden]

I was talking to my local exhaust place about a system for my prado and they said if you dont want a full system as you are looking at approx $1400 fitted you can simply chop the standard muffler out and fit a 2.5inch free flow inplace for $170 fitted and will make a big difference, redback systems dont provide a new dump pipe as they say the standard 90 series is fine to use, so im going to try this mod and see if it makes any difference.

[2002TX Junior Member Find all posts View Profile Close 2002TX]

Dunno who redback systems are, but my understanding is that the dump pipe is the most constricted part of the std 95 series exhaust system? Have you read other threads on the subject?

[wholesalesuspension Advanced Member Find all posts View Profile Close wholesalesuspension]

Get rid of the Toyota Dump pipe. It is restrictive.
I have a 2.5 inch Dump pipe into a 3 inch exhaust all the way through with only 1 small Straight Through Muffler....
Happy with the extra pull up long hills.
Sounds great too.

Regards, Jason.

[jayden Lurker Find all posts View Profile Close jayden]

Get rid of the Toyota Dump pipe. It is restrictive.
I have a 2.5 inch Dump pipe into a 3 inch exhaust all the way through with only 1 small Straight Through Muffler....
Happy with the extra pull up long hills.
Sounds great too.

Regards, Jason.

Hi jason,

i have just purchased a 3 inch system locally other day (wasnt cheap) they assured me 3 inch system with dump pipe, got it home no dump pipe after a day of comunicating with sales rep he said sorry looks like they have changed the system but they havent updated the books and this system dosnt come with dump pipe anymore, he said they will give me a full refund if i want, i said definitely, so waiting for the credit to go through to my account and will be looking for somthing else. will keep you all posted if your interested.

[MalcomM Senior Member Find all posts View Profile Close MalcomM]

Get rid of the Toyota Dump pipe. It is restrictive.
I have a 2.5 inch Dump pipe into a 3 inch exhaust all the way through with only 1 small Straight Through Muffler....
Happy with the extra pull up long hills.
Sounds great too.

Regards, Jason.

Hi Jason

Why did you go 2.5 on the dump and 3 for the rest?
why not 3 all the way?

Cheers
Malcom

[wholesalesuspension Advanced Member Find all posts View Profile Close wholesalesuspension]

Hi Jason

Why did you go 2.5 on the dump and 3 for the rest?
why not 3 all the way?

Cheers
Malcom

Hi Malcom.

Space restrictions limit size of the dump pipe especially beside the Bellhousing for the Trans.
Mine is about a cigarette paper away from a mounting bolt.

Once you pull the original dump pipe off & see the internal size difference between that & the new one, you will be amazed.
The original one is quite restrictive.

I'm still not completely happy with the overall design of the one i have either.
Ideally you want to run a divider plate between your Turbo impeller & the wastegate. Then a separate pipe for the wastegate that plumbs back in 30cm or more down stream, as the turbulence caused by the wastegate when it opens is a big interference to the impeller.

This is the style of Dump pipe that everyone makes for our Prado's with a straight open dump off the back of the Turbo.





Ideally this type of setup would be far more ideal & they are much more efficient, but there just isn't the volume market there for someone to do the R&D on these to make them.






Regards, Jason.

[MalcomM Senior Member Find all posts View Profile Close MalcomM]

Thanks for all that.

Did you have it supplied and fitted in Sydney?
If yes then by who?
I have big hands so there's no way I'll be fitting one myself.

cheers
Malcom

[jayden Lurker Find all posts View Profile Close jayden]

Hi just an update, i have my new 3'' system with 3'' dump pipe, ordered it from scott's rods very good quality all aluminised steel with neat welds and fast delivery, i removed the exhaust on the weekend but run into trouble with the last nut on the dump pipe the one you cant see next to gear box bruised both my arms skinned my nuckles in the process cant seem to get leaveridge to crack the nut, i have booked it in on friday to a recomended exhaust fitter as i dont want to end up having to go to counselling over this hell of a job LOL

will see how the all goes friday.

cheers

[wholesalesuspension Advanced Member Find all posts View Profile Close wholesalesuspension]

Thanks for all that.

Did you have it supplied and fitted in Sydney?
If yes then by who?
I have big hands so there's no way I'll be fitting one myself.

cheers
Malcom

Hi Malcom, i only just saw your reply to this.... Sorry.

I had mine done by
Girraween Exhaust & Mechanical
3/160 Gilba Rd Girraween.
PH: 02 9688 3686
Anthony & Jamie there are great guys & Jamie is a 4wd nut like myself.

Regards, Jason.

[Skitzy Junior Member Find all posts View Profile Close Skitzy]

confused

hi all i have spent days and hours of reading,talking,getting quotes..i have a turbo 95 series now i have been told that i cant fit a
3'' exhaust system to the car i will kill it..
2.5''-2.3/4'' exhaust system seems to be the most popular for my car and even then i got told i have to but in a k&n filter to help with the bigger exhaust system..
no place i have talked to has said any thing about the dump pipe or changing it...i see a few of you have the 3'' system have u had any problems ? and are u running a chip as well? some it up i want to run a chip n exhaust system to get better power, fuel and what not for black top driving around town/highway and towing around town/highway also for off road driving n the chance of towing off road...i have picked up a snorkel n k&n filter but not fitted yet.. i'm confused on what i exhaust system and brand i should get...

[clarkie383 Member Find all posts View Profile Close clarkie383]

Best thing ever,3" Scotts rods exhaust with new dump pipe.
So much better on the hills that I found I had to back off or it just kept pulling.
After comparing original dump pipe to the 3" one the difference is huge.
NIKE.....Just do it.

[wholesalesuspension Advanced Member Find all posts View Profile Close wholesalesuspension]

hi all i have spent days and hours of reading,talking,getting quotes..i have a turbo 95 series now i have been told that i cant fit a
3'' exhaust system to the car i will kill it..
2.5''-2.3/4'' exhaust system seems to be the most popular for my car and even then i got told i have to but in a k&n filter to help with the bigger exhaust system..
no place i have talked to has said any thing about the dump pipe or changing it...i see a few of you have the 3'' system have u had any problems ? and are u running a chip as well? some it up i want to run a chip n exhaust system to get better power, fuel and what not for black top driving around town/highway and towing around town/highway also for off road driving n the chance of towing off road...i have picked up a snorkel n k&n filter but not fitted yet.. i'm confused on what i exhaust system and brand i should get...

So sorry Skitzy, only just saw your post.

I have a 2.5" Dump with a 3" exhaust. Have had for a while now and have had no probs at all.
The dump is highly recommended when you do the exhaust, as it is restrictive.
A 2.75" system would be fine also.
Mine is not chipped yet, but hopefully will be soon, but just the gains from the exhaust when towing have been noticeable.
I'm verry happy with it.

Regards, Jason.

[MalcomM Senior Member Find all posts View Profile Close MalcomM]

hi all i have spent days and hours of reading,talking,getting quotes..i have a turbo 95 series now i have been told that i cant fit a
3'' exhaust system to the car i will kill it..
2.5''-2.3/4'' exhaust system seems to be the most popular for my car and even then i got told i have to but in a k&n filter to help with the bigger exhaust system..
no place i have talked to has said any thing about the dump pipe or changing it...i see a few of you have the 3'' system have u had any problems ? and are u running a chip as well? some it up i want to run a chip n exhaust system to get better power, fuel and what not for black top driving around town/highway and towing around town/highway also for off road driving n the chance of towing off road...i have picked up a snorkel n k&n filter but not fitted yet.. i'm confused on what i exhaust system and brand i should get...

Think you need to find a new mechanic!
The dump pipe is a bitch to replace so maybe they are ducking the issue and there is heaps of 3" systems installed on 90's.
If you are going off road then use the genuine Toyota air filter. Expensive but nothing better and no mucking about cleaning it every few 100Kms when you clog it up with dust.