Thread: Turbo Rebuild Limited Td5

Originally Posted by Roverlord off road spares

May be try and Unplug the piggy back chip and see what happens, you might find you don't need it anymore?
Maybe a proper ECU remap like TD5 inside might be better than a an on chip. Only trouble is Td5 inside doesn't appear to answer emails anywhere.?????? so don't know how to get in contact.

Yep x 2 unplug the chip .
Chips are for eating and i dont know what brand you have nor really care as they just fool the ecu and bang more fuel in and not where it is really needed.
A correct remap is the go say jose Td5 inside any dramas and he will modifie it to suit your needs and style

Originally Posted by rangieman

Yep x 2 unplug the chip .
Chips are for eating and i dont know what brand you have nor really care as they just fool the ecu and bang more fuel in and not where it is really needed.
A correct remap is the go say jose Td5 inside any dramas and he will modifie it to suit your needs and style

The chip has been in for many years and proved absolutely reliable for extra power and, getting 1000km from a tank of diesel isn't bad either. You would be surprised at the extra power it provides.
I did sell it to someone else on the forum and then bought it back.
Don't can something that you've only read about and haven't used personally.
I also use the same type of chip on my motor bike which gives 95% of the extra power that a PC3 provides at 10% of the price(which can be set to add fuel for acceleration, set fuel ratios for idle and off power, and set to rev ranges too). All you need is an AFR guage to set it, no dyno time requiered and no rip off for a software change that these people charge exorbitant amounts of money to change for a few key strokes on a computer.
Technology has come a long way.(Load based technology)
The one tip that I did get from Turbo Rebuild Limited was to fuel the engine up rather than fueling it down to reduce the egt's. Removing the chip will fuel it down.
So I guess I'll keep looking for tips.

Cheers,

Jason

More fuel in = higher egts. Thats how diesels work. Burn more fuel, you get more heat. It's almost the polar opposite of a petrol engine, (leaning out the afr melts pistons - ask me how I know).

The richer a diesel runs the hotter it will get and the more damage you will do to your motor .
A chip is a dummy form of tune , You need a tailored tune , Not a one tune suits all which a chip does .
So if you have a AFR guage and as you say you can adjust your chip as you said you can then id do so , If not it will all come down to your chip as you now have a more efficent turbo than standard and with a chip that is more than likely inacuately over fueling at the wrong time.
Im running the standard tune and dont have any issues with high or higher EGT`s
Id try with it unplugged or a tailored tune apart from that i feel your chasing something that is not there

Originally Posted by donh54

More fuel in = higher egts. Thats how diesels work. Burn more fuel, you get more heat. It's almost the polar opposite of a petrol engine, (leaning out the afr melts pistons - ask me how I know).

Only really true if too much fuel is put in.

Upto a point adding fuel can reduce EGTs. The extra fuel spins the turbo harder, turbo produces more boost, more boost controls EGTs.

So, I wasn't running high egt's. I install a turbo cartridge, get high egt's. There is no way to fix this except with a newly programmed ems or disconnect the chip??
I love good advice, and l'm still looking for it.
Cheers,
Jason

What boost are you now getting with the new CHRA?

Originally Posted by kelvo

Only really true if too much fuel is put in.

Upto a point adding fuel can reduce EGTs. The extra fuel spins the turbo harder, turbo produces more boost, more boost controls EGTs.

Let me explain it a bit differently:

More fuel than the available air can combust cleanly, will result in higher egt. The new turbo is putting in more air, so theoretically, the egt should be dropping. But it isn't. Why? Because for some reason, the chip (or the original ecu) is feeding more fuel UNDER THAT CONDITION. (Wide Open Throttle - under load).

You say you can adjust the chip - I'd suggest you look at adjusting it for those conditions. By adjusting, I mean leaning it out at that point, until the egt comes back to a safe level, if it allows that sort of adjustment.

Thinking about it, as a piggyback or plugin chip, what inputs does it manage, and what does it leave to the original ecu to manage. The extra boost you're getting now may have triggered something that wasn't noticeable under less boost. Perhaps the ecu is extending the dwell time due to some signal it's getting.

EGTs drop with more fuel generally only when the engine is spinning up, or at low rpms because the turbo requires more energy(heat) to rev up. (That will only be readily noticeable if the probe is sited immediately AFTER the turbo, i.e on the exhaust side). Once the engine reaches WOT the turbo is spun up, and doesn't use up as much energy (read heat) to maintain boost.

It's probably best to sort this out pretty quickly, as the damage from excessive egt is cumulative.