Like Tombie I have had manifold problems before and after chipping, I'm fairly happy with mine, although I have a Bruce Davis chip and the problem with his chip is you lose the soft throttle in low range and it surges suddenly without warning, very scarey if your trying to crawl down a steep incline
At the moment I have purchased a later ECU from a later model D2a and Tombie is working on a chip for it, hopefully it will help with the towing of my camper.
I have tried the medium Defender TD5 chip in the new ECU from Tombie2 and it was miles better than the B Davis chip, although I don't think it works as well in my manual Disco as it does in the Defender, the Defender seems to have a bit more poke when comparing mine against a Fender, I also lose the cruise and temp gauge with the Defender chip, the Def and Disco TD5s are a different setup and this is probably why.
I have sorted my manifold problems thanks to Tombie2, I have bigger manifold studs and have ground the webbing out on the manifold, so far 2yrs without a problem.
Baz.
Cheers Baz.
2011 Discovery 4 SE 2.7L
1990 Perentie FFR EX Aust Army
1967 Series IIa 109 (Farm Truck)
2007 BMW R1200GS
1979 BMW R80/7
1983 BMW R100TIC Ex ACT Police
1994 Yamaha XT225 Serow
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