Thread: Lack of power even after mods

Hi Justin, you mentioned a couple of times "is it quiet for a tdi? " people have commented my Tdi is quiet, is that a sign that means the timing is a bit retarded? Mine seems to go ok, pulling 1.2 transfer case and 235/85/16s, I was just thinking the other day how well its going, I recently rejoined the working class, ( as opposed to the not working class ), and have been driving 20 kms to work each day, mostly in 3 rd & 4th gear.

cheers simmo

Do you have exhaust wrap simmo?

I just wrapped the first metre of exhaust from the turbo on my tweaked 300Tdi and.....damn....what a difference in noise level both inside and outside. it is so much quieter.

Yes its wrapped from the turbo outlet to the aft end of the transfer case,and has no center muffler.
Lots of interesting comments here about the disco TC conversion- IMO -one of the best value mods I've done. Once I learned how to drive it and adjust my gear change times. I never use 5th gear around town now, but hang on in 4th and let the engine rev. Same ona long hill, I'll just hold it in 4th at 100 km/hr and let it rev and do its job, egts permitting. Its not a 5 l V8, it needs to rev to make power. (another member on the forum gave me that tip). Its not like defender gearing where youre in 5th gear at 60 km hr.

The car is so much quieter inside with the disco TC.

I run 235/85/16, (32"?) & hardly notice that 1st gear is higher except on a very steep hill or towing a heavy trailer, (rarely). I could see it would be a problem towing a van though. I think if I got a small van I'd put my defender TC back in, and just drop 10 km/hr off my cruising speed.

Cruising at 100 km hr ( with roof rack), is about 400 deg C , about 12 psi boost, 110 km h its up to 15 psi , measured at the manifold.
Cruising is noticeably more relaxed without the drag of the roof rack, my VGT turbo boost is set to 21psi max, I wouldn't have much concern about raising the boost on a tdi, from what I've read the engine can run up to 21 psi without any noticeable reduction in reliability or engine life.

Between the VGT, bigger intercooler & the disco TC, the car is transformed into a much more relaxing and enjoyable drive, I'm probably doing 40 % less gear changes than I used to.

Someone said " you spent a lot of money on the engine in that car", you could have bought a Td-5 defender. it's true, I spent about $2700, +$1000 for the TC, but the money was spent over 5 years. A Td-5 defender in the same condition as my car was never going to be a $3000 -$ 4000 change over.

Its a little off topic I know , but the 200 & 300 tdi are not that far apart and they can be tuned to make for a reliable, and enjoyable car to drive for not a lot of money. If your in it for the long term you'll get you monies worth of enjoyable motoring.

Its the car land rover could have made in 1995 with all their resources and expertise.

cheers simmo

Sounds from those egts it is actually timed quite well seeing as it has 20% taller gearing and is working hard in 5th at 100kmh... the quiet i referred to was regarding detonation rattle . From a warm idle you should hear a nice clatter when blipping the throttle. And it should start straight away and accelerate smoothly from stone cold... although your idea of cold up there is actually Not. Cold. At . All....😅

OMY130. Thanks for getting back and updating
On re-reading the thread a few of us payed the blame on timing at the get go.
Your reply of
“Spoke to MR Auto. Part of their re-tune checks timing & value clearance. So it's not that.”

Is a little concerning but a good learning point. Either get some ears like JustinC that can hear the tune of a tdi or stick a Freekin dial gauge in the plunger of the FIP and check the actual pump timing

Steve

I had not heard of these T boost controllers either. Looked at the Turbosmart on the ebay link.
What does one do with the wastegate etc when installing this?