Thread: TDi 300 & Turbo Lag

Hmmm Jase, JC and I discussed this very subject again this arvo. I desperatly trying to resist at this point. Toooo much other stuff to do.

Turbo lag is pretty much the standard on a stock Tdi. I've found that changing driving habits makes all the difference. For quick in-and-out through roundabouts, into traffic from sidestreets or crossings I use plenty of clutch slip - bring the revs up to 1400 or so, let her catch, and if it doesn't get going giveit a little more clutch to bump the revs into boost and then slide the clutch back out again. I've surprised a lot of people with what my Disco can do (terrifies the wife...).

Don't be afraid to rev it either - I've pushed 3500 out in fifth and still accelerating at 155 km/h (but I ran out of road). 4000 rpm is easy for a 300Tdi in 1st, 2nd and 3rd and you can hang on for that in fourth if you're game. The secret is to pick your changes so when you up-a-gear you're in the 2000 rpm area. You'll be amazed at the performance, and the R380 gearbox shifts beautifully fast to let you do it too (it'll even handle a clutchless shift if you're careful).

If you're worried about reliability doing what I'm saying? I've done 275000 and it's as strong as it was at 140000 (when I bought it).

Clean your intercooler out im happy with mine after the clean
maybe you want more and if you do go the pump mod and exhaust then you should be happier

Sorry im late onto this one...

in order heres how ID adress it

1. adjust your driving profile to suit the donk, the TDI 300 likes a few more revs, keep it nearer the middle of the rev range 1700 is where the turbo is just starting to get interested in its job.. If you want more go let the engine wind out to about 28/2900 rpm before shifting so long as your coming off of the clutch in the next gear up with 2000+ rpm on the tacho before planting the boot that will all but cure your lag.

(Assuming your going to replace the air intake components, and the exhaust and redo the injector pump..)

2. get the turbo venting. Fit the exhaust that will cleanly flow the gasses required for the power you want to actually get. you wont develop all of this power untill you up the fuel + air going in and this wont cure all of your lag but it will help.

3. get the engine breathing, fit the air system your going to fit, clean everything, minimise the number of bends in it and maximise the radius of the turns.

4. Give it something to burn, now that youve got buckets of air going in, and plenty of space for the burnt gasses to go give it all the fuel you dare..

Nice thing about Turbo diesels you can wind the fuel up, wind the boost up and so long as the engine will handle the increasing pressure and temp you get more power.