Thread: WTF! - EGT's with TRS chip... Td5 manual MSB

With the stage 2 i can see some if i floor it in higher than required gear but not much, with the stage 1 i can't see any in the mirror.

MR LR,

Just to calibrate what you are observing, when you are on a flat road and sitting on 100kph, what RPM, EGT and Turbo Boost are you seeing?

Will help understand if you are at least seeing normal expected readings under normal loads.

DiscoDB

Those figures don't seem all that bad, especially if you're sitting on 100 and still have your foot into it, what you need to do is learn how to drive by your EGT guage, even after you do the mods you have planned, especially when towing.

I had almost the same setup in my D2, before changing to the NNN ECU;

Bruce Davis chip(same as the TRS Chip)32s, had no idea about EGTs at the time, spoke to Mike(Tombie), so started the lowering of the EGTs, at the time they were around the 650 to over 750 and that EGT alarm was driving me mad, so in the meantime to lower them while waiting for the parts.

I wound the boost to as high as I could without over boost, this dropped them to 600 to 700, higher if you kept the boot in, once the parts I ordered came, I ditched the BD Chip, went to the NNN ECU, the TD5 Alive towing tune, after a couple of to and fro adjustments, then silicon hoses, boost box, wound the boost to 22psi and larger intercooler, this brought the EGTs down to maxing out at the 650 to 670 while towing, not towing around the mid 500s.

But, I still drove the car by the EGT guage, when climbing long hills I would watch them and when they got to the mid 600s, I would ease off the throttle a touch but still keeping it in that sweet spot to maintain speed going up the hill, it is possible to keep the momentum and still ease off the throttle, it's only a tad, but watch those EGTs drop.

So once you do the mods you plan, those EGTs will drop, it's amazing just going to silicon does, I'd go higher in the boost, 21psi would be fine, I had 22psi and sold the car at 320,000ks still in perfect nick motor wise.

Baz.

Originally Posted by DiscoDB

MR LR,

Just to calibrate what you are observing, when you are on a flat road and sitting on 100kph, what RPM, EGT and Turbo Boost are you seeing?

Will help understand if you are at least seeing normal expected readings under normal loads.

DiscoDB

Got these readings today, this is speedo 100, as were the other readings (real time 110km/h).

This is on the flat with cruise set, revs around 2200. It floats between this and 500 on 'flat' sections.

Originally Posted by Redback

Those figures don't seem all that bad, especially if you're sitting on 100 and still have your foot into it, what you need to do is learn how to drive by your EGT guage, even after you do the mods you have planned, especially when towing.

I had almost the same setup in my D2, before changing to the NNN ECU;

Bruce Davis chip(same as the TRS Chip)32s, had no idea about EGTs at the time, spoke to Mike(Tombie), so started the lowering of the EGTs, at the time they were around the 650 to over 750 and that EGT alarm was driving me mad, so in the meantime to lower them while waiting for the parts.

I wound the boost to as high as I could without over boost, this dropped them to 600 to 700, higher if you kept the boot in, once the parts I ordered came, I ditched the BD Chip, went to the NNN ECU, the TD5 Alive towing tune, after a couple of to and fro adjustments, then silicon hoses, boost box, wound the boost to 22psi and larger intercooler, this brought the EGTs down to maxing out at the 650 to 670 while towing, not towing around the mid 500s.

But, I still drove the car by the EGT guage, when climbing long hills I would watch them and when they got to the mid 600s, I would ease off the throttle a touch but still keeping it in that sweet spot to maintain speed going up the hill, it is possible to keep the momentum and still ease off the throttle, it's only a tad, but watch those EGTs drop.

So once you do the mods you plan, those EGTs will drop, it's amazing just going to silicon does, I'd go higher in the boost, 21psi would be fine, I had 22psi and sold the car at 320,000ks still in perfect nick motor wise.

Baz.

I've already got the mods Baz! That's what's doing my head in, and to know I ran it for 30,000 before the mods scares me!

What it's got:
- 3" snorkel, Mantec style but bigger, with a 3.5" Cruiser pre filter
- D2a intercooler.
- Samco hoses
- 20PSI boost max, with one of Mike's boost boxes, not that it ever really gets right up there on the freeway.
- EGR delete

The figures are with me only just maintaining 100k's, these are hills it flew up at 120 with a stock tune.... on 32's and unladen. BOth images were taken on the hill just north of Mt Ousley.

I towed my dune buggy on the trailer to our farm the other day down the Hume, I was back to 80 k's on Catherine hill in 4th to keep EGT's under 700, still had loads of poke, but too much smoke! Again a hill i could tow up at 120 with a stock tune on 32's... (it only weighs 700kg on the trailer!).

Will be going the Td5 inside NNN towing map aswell...

Originally Posted by sierrafery

I made that deduction cos i've swapped the chip from my ECM(tachosoft remap) to a friend's same year D2 with 265/70/16 tyres(mines are stock 255/65/16) and we've got +100/150*C increased EGT on his, he has the original intercooler, i have a performance one...i dont understant that D2a intercooler thing cos afaik the auto intercooler is even smaller than the original manual one due to the oil cooler, unless your manual has a factory fitted cooler which is smaller than the auto, i dont know these things cos manuals dont have cooler around here

i get max 700 uphill with the stage 1 chip and 800 with the stage 2 on mine

about the VSS, the speed sensor's output is AC voltage which grows with the wheel's rotation speed but the manegement "expects" certain VSS inputs according to rpm and driver demand as it was calibrated from factory and when the initial equilibrium is mixed up any kind of things can happen

Inter-cooler is the D2 update 40mm jobby as others have said, was a noticeable improvement and cut smoke in 4th by a lot.

Will see what TRS say about the VSS and RPM readings and how they compare to throttle input and torque output, leaving it till after I get the oil analysis done to contact them though.

Originally Posted by discorevy

pre facelift intercooler 27 mm thick
facelift d2a intercooler 40mm thick
mr lr see what your egt reads after you wind up your boost but smokescreen in 4th ( not good )
sierrafery if probe is in the same spot as your friends then its probably more to do with your intercooler especially if you are running higher boost, that his egt,s are higher than yours ,

That's correct.

I will add that the smokescreen has reduced a lot with the new IC.

So by comparison, at 100kph which for me is 2400rpm, my boost is higher between 10-12psi but the EGT sits much lower around 330-350 degC. I have an upgraded IC from Alisport for a manual which is much larger than the stock D2a IC (deeper and requires the gbox oil cooler to be relocated).

Interesting, I wonder if it would change if my gearing was back to stock and it was revving higher. Thanks for the comparo

How is yours geared?

Gearing all stock, tyres original size. I think you do need to undo some of your changes as it sounds like it is working much harder than it needs to. Are you also carrying a lot of extra weight through bar work etc?

I do wonder about your fueling map though or if you have some other restriction on the air flow side. With a remap it can hide other problems which normally sap power as it naturally feeds more fuel in. With the turbo diesel BMW motors, they regenerate the DPF exhaust by choking the air flow and dumping in more fuel - boost drops off and EGT climbs to 580 degC at a constant 100kph to burn off the carbon dust.

Would be good to see some comparisons from others who have a set up closer to yours.