Silver C70 T5 - Manual - 400BHP

[MA'R'K]

I defo admire the intensity Dave!!!! Goes way over my head though.... unless I can see and touch something it's all Greek to me

[Rebel Rebel]

Only if the award runs Feb>> August LOL

Personally I think SSB is a misnomer - surely FANY (Fix Again Next Year) or Lotus (Lots of Trouble usually serious) is more suitable? And yes I did plagiarize TG for the latter.

I think after all the money I have spent/will continue to spend I deserve a bit of luck this year.

Surely sticking with the volvo theme would be more appropriate - IRS

I roll sometimes...

[Dream3r]

The custom 19T map (the 4th custom map I had for that turbo) was put onto the car by Hamish but the file came from a Swedish tuner and certainly I got the best result out of the 4 that I tried - including RICA.

I cannot seek any further improvements as much as I would have liked to with that guy - because he sold up and is doing work for Chrysler or Ford or Polestar or something really big and expensive. There was talk way back when about data logger etc but nothing ever came of it. Given that the person who wrote the file is not involved or contactable anymore & this is a non-transferable map as it was unique to my setup at the time, I think it is fairly safe to assume I can do as I please.

The map is at least 6 years old. To be honest it is probably time to draw a line under it and look to a new file (or build on the top of this one??) - but without the data logger I am running a bit blind. I've been talking to Shemtek over the last couple of days & maybe we can do some work in redeveloping the dp/turbine housing collector, but before I trot off down that route I really need to get a better picture of what is going on.

As long as HLM are happy about that matey.

[Wobbly Dave]

I defo admire the intensity Dave!!!! Goes way over my head though.... unless I can see and touch something it's all Greek to me

Let me illuminate you then. There was a discussion on social media between myself and a nottingham-based volvo specialist - Shemtek - that perhaps I should be disappointed with the results of the turbo and some of it may be down to higher than normal exhaust gas temperatures EGT. Shemtek said that I had the wrong turbine housing and that the one I had bought would be artificially increasing the EGTs. This is all purely conjecture without some proof. So I was looking to Dream3r to provide me with some data logging so I could get the WOT values for EGT amongst other things. At the moment the amount of data I have is limited to merely 10 runs on HLM's dynojet from last year.

https://youtu.be/1Kc7zyr9KLc

There probably is some wisdom in changing the collector after the turbo to either include a separate exhaust pipe just for the wastegate...


using this flange that works with the GTX housing


as opposed to what I have right now -




or even a wide mouth collector welded onto a 5 bolt flange.

[Wobbly Dave]

Even though the space is tight - I think the dedicated 2" W/G exhaust pipe is a better option as it means minimal changes to the actuator. Removing the V-band and altering the DP slightly is much easier.

[Dream3r]

Let me illuminate you then. There was a discussion on social media between myself and a nottingham-based volvo specialist - Shemtek - that perhaps I should be disappointed with the results of the turbo and some of it may be down to higher than normal exhaust gas temperatures EGT. Shemtek said that I had the wrong turbine housing and that the one I had bought would be artificially increasing the EGTs. This is all purely conjecture without some proof. So I was looking to Dream3r to provide me with some data logging so I could get the WOT values for EGT amongst other things. At the moment the amount of data I have is limited to merely 10 runs on HLM's dynojet from last year.

https://youtu.be/1Kc7zyr9KLc

There probably is some wisdom in changing the collector after the turbo to either include a separate exhaust pipe just for the wastegate...


using this flange that works with the GTX housing


as opposed to what I have right now -




or even a wide mouth collector welded onto a 5 bolt flange.

I'm sorry to say that ME7 has an EGT reading but it's only a modeled one based on engine VE and relative cylinder charge, yours will be miles off. There is no EGT sensor to speak of.

[Wobbly Dave]

I don't know why I imagined that the value could pull it off the top o2 sensor - derrr!

Can I wire one in? (goes off to the internet to find out)

[Dream3r]

I don't know why I imagined that the value could pull it off the top o2 sensor - derrr!

Can I wire one in? (goes off to the internet to find out)

Lol, yes of course. But to integrate it into the ecu would require something special written in assembly code. A simple gauge would be easier.

[Wobbly Dave]

My blitz i-color sadly cannot be expanded to include EGTs - only AFR and I would have to buy the MMD upgrade to include it and even then There are 2 plugs for optional sensors. One is strictly for Temperature and the other is for either Pressure OR A/F Analyser.
The unit is not able to display both Pressure and A/F.

Blitz's EGT standalone gauge is quite expensive at 200 quid.

Not sure which gauge to get.

[jamesy12345]

I don't know why I imagined that the value could pull it off the top o2 sensor - derrr!

Can I wire one in? (goes off to the internet to find out)

http://www.efi-parts.co.uk/index.php?productID=175

??

[Wobbly Dave]

Do I really need to tap my exhaust manifold?

[jamesy12345]

http://www.efi-parts.co.uk/index.php?productID=175

??

Do I really need to tap my exhaust manifold?

that's what the advice seems to say. The guy (Chris) is pretty knowledgeable if you give him a call. I was thinking about getting one for the Renault and would need to go into the manifold also if I wanted to fit the sensor before turbo..although that is a tubular one so would be less of a worry - drawn piping as opposed to a cast item

[Rnash2002]

Would it not be easyer to change the turbo all together?

[jamesy12345]

Would it not be easyer to change the turbo all together?

no disrespect to Shem by any means - but change the turbo based on the advice of one guy? I think we haven't seen all this turbo can do yet...although 400 hp is not small

[Rnash2002]

no disrespect to Shem by any means - but change the turbo based on the advice of one guy? I think we haven't seen all this turbo can do yet...although 400 hp is not small

Yes i see your point but if Dave is struggling to make more power with more boost then something is wrong?

[claymore]

Yes i see your point but if Dave is struggling to make more power with more boost then something is wrong?

I think the main reason Dave isn't getting the power is the modified 19T map, I think if it was mapped properly he would see in excess of 450bhp, although I still question the size of his boost pipes and I would be inclined to change the exhaust housing for something like this.

http://www.ebay.co.uk/itm/Downpipe-F...item3f46255d89

[Rnash2002]

I think the main reason Dave isn't getting the power is the modified 19T map, I think if it was mapped properly he would see in excess of 450bhp, although I still question the size of his boost pipes and I would be inclined to change the exhaust housing for something like this.

http://www.ebay.co.uk/itm/Downpipe-F...item3f46255d89

Did not know it was a 19t map on there, now that could be one of the problems then.

[jamesy12345]

Yes i see your point but if Dave is struggling to make more power with more boost then something is wrong?

Yosser was very successful getting his (now my) S70R custom mapped for the mods on his car - I think the forum should have a whip round and fund 3 new maps from different tuners for comparison for Wobbly, in the name of science . It's not all about peak numbers anyway....depends how the car drives & what it will be used for.

[Wobbly Dave]

I think the main reason Dave isn't getting the power is the modified 19T map, I think if it was mapped properly he would see in excess of 450bhp, although I still question the size of his boost pipes and I would be inclined to change the exhaust housing for something like this.

http://www.ebay.co.uk/itm/Downpipe-F...item3f46255d89

My V-band is 3 inch and I think there might be some mileage in refining the design. But does everyone really think that this...


is so restrictive. It is after all only the flow from the waste gate that has to turn the corner? How much gas come out of there?

[Wobbly Dave]

no disrespect to Shem by any means - but change the turbo based on the advice of one guy? I think we haven't seen all this turbo can do yet...although 400 hp is not small

The most I would do would be to change the collector. There is too much rework involved in changing the housing for benefit which is ATM speculative at best.