Let the tinkering get serious!!....

[POLARBEAR666]

2nd blower installed.

[gldgti]

Now I have the EGR insufficient flow registering, but it beats me how it knows, the O2 probe is what measures that, and it's been tricked by the wayne angle block.

I'm doubtful that the angle block will completely defeat the logic in the ECU, as all it will really do is offset the readings a bit, and introduce "lag" in the data from the probe.

As far as EGR and EGT's go, my own experience (having driven around with an EGT guage fitted pre-turbo for 60,000km's now) is that;

1) It is near impossible to make the egt's "dangerous" even when blowing nightmaking smoke, if the engine is at low rpm and making little/no boost (when i have turbo lag) - This adds weight to your theory Greg.
2) Once on boost, smoke = high EGT's. This also adds weight to your theory.
3) Always, without fail, if you add enough boost, EGT's go back down. Even with a massively aggressive tune, adding enough boost will always reduce egt's (although i'm positive that the NOx emissions go up).

So yeah, I reckon we're both right. Something I have realised of late (since I put the big T3 back in) is that its much more difficult to get into the dangerous EGT range for a given 'load' - especially high loads like high speed acceleration (at freeway speeds, up hills). I really attribute this to the larger flow abilities of the t3 exhaust side... less restriction.

[Greg Roles]

Polar, any reason your blower blows from the hot side across the cold side????

I'd understand if it was sucking.....


Yep I agree Aydan, fuel equals heat, not air. I'm avoiding flat out efforts till I get the snow kit in, which will give me true pre turbo EGT's digitally, and water meth to keep it safe as the controller can reference EGT's as well.

In stock tune I think it'd still be pretty safe, but better safe than sorry.

[Jarred]

Wait a min, what are the NASCAR blowers for?

blowing cool air/suckin hot air out from the engine bay?

[Greg Roles]

In MY car they are to circulate engine bay air on idle, to reduce heatsoak in turbocharged cars.

In POLAR's car it's to heat up the inlet side of his turbo to tame the response of his overly powerful 1400cc big block.

[gldgti]

In MY car they are to circulate engine bay air on idle, to reduce heatsoak in turbocharged cars.

In POLAR's car it's to heat up the inlet side of his turbo to tame the response of his overly powerful 1400cc big block.

So he doesnt bake off the tires every time he moves off?

[Greg Roles]

Back to the important stuff, the Autobahn88 bead roller arrived this week. Makes up to 2mm high beads beautifully, even in my thicker 2mm alloy pipework. Obviously thinner is a piece of cake, but stainless would be a test! Takes all of 30 seconds too!

My 2mm beads to the right, beads from china on the left of small pipe. Rolled beads WAY better!





I've a full weekend of tinkering ahead, not much stopping the pipework going in now!

[gldgti]

nice bit of kit there! I use 1.6mm 316L stainless for my pipework, so i reckon it would have a lot of trouble. But, the stainless is easy to weld onto, so i just weld 6-8 "knobs" around the circumference of the end of the pipe. that works fine.

[POLARBEAR666]

Hey cog, I just removed the windscreen wiper shroud and the black metal shroud at top of engine bay. This creates a 2-2.5 inch gap along the whole length of the windscreen and you can't really see it even when standing next to the car. It absolutely pours heat when the car is stopped. Of course high pressure cold air will rush down that spot when going fast but I think the main issue with heat soak is when sitting at the lights and this will outweigh any reduction in airflow through radiator and intercooler. I will report back once I have watched my water and intercooler temps for a while. I did this mod after seeing that quite a few of the mk5 and scirocco race cars have either half or all of the windscreen wiper shroud and metal shroud removed. This must be for the cooling (and also to reach the strut tops).

[Preen59]

That roller looks nice. If i ever need to do that stuff I might make myself one of those....