DPJ's GTRS Eliminator Install and Development

[DPJ]

Theres hardly any difference with the wmi dave? Whats your thoughts?

Got new plugs yet?

At this precise moment, I haven't much idea, Phil! The methanol dose is too low probably. 60-100 in 4th is promising, considering it's not fully spooled at 60.

I haven't had time to gap my plugs (or fit the 3" compressor inlet)

 

[PhilW]

Yeah low 6 seconds 60-100 is very quick indeed.

Bet it shifts fair play.

 

[DPJ]

Ok, I've given it some thought. Firstly, I wanted to establish a base set of figures for the final fine-tuning. That's the reason I also did a 60-100. I wanted to use the base set to compare future wmi tweaks, plug changes etc.

I didn't do an ecu reset before I started. Do you think it would have made any difference?

Quite honestly, there's no real difference between last night's without/with wmi logs. I would have probably seen the same difference between two consecutive runs with no settings altered.

The wmi is injecting 80% of what's really being needed fluid-wise at the onset of full boost. If it was going to show a difference, I think it would have changed the CFs at around 4k rpm. At 20% methanol:water, only 32% of the 'recommended' methanol charge is going in. My intercooler seems really effective anyway, so the cooling effect of a small charge of wmi is probably not making a significant difference. (as Wilco said earlier). The question is, what is happening with the methanol that is being injected?

I have CFs of 3 virtually across the board from about 3k to 5.5 k. This is fairly evenly on the run-up to peak torque and down the other side of the curve. Is my fuelling rich through that range, such that the added methanol makes no difference?

I'm happy to repeat last night's runs after an ecu reset if it's thought worthwhile.

 

[PhilW]

I think it might be worth a post on Vortex about this dave.

 

[DPJ]

I think it might be worth a post on Vortex about this dave.

I don't think I've really established what my problem is yet. I also don't think I've got sufficient data at what would be considered 'optimal settings' (ie running 50% wmi with a 225ml nozzle at something approching the correct timing advance. )

The thing is, where do I say is the correct starting point to commence tweaking timing to take advantage of the methanol? I'm only at T7 at the moment. Should I be trying to get rid of the CFs, then advance a bit, then try to get rid of the CFs again..............

My brain hurts!

 

[ibizacupra]

Ok, I've given it some thought. Firstly, I wanted to establish a base set of figures for the final fine-tuning. That's the reason I also did a 60-100. I wanted to use the base set to compare future wmi tweaks, plug changes etc.

I didn't do an ecu reset before I started. Do you think it would have made any difference?

Quite honestly, there's no real difference between last night's without/with wmi logs. I would have probably seen the same difference between two consecutive runs with no settings altered.

The wmi is injecting 80% of what's really being needed fluid-wise at the onset of full boost. If it was going to show a difference, I think it would have changed the CFs at around 4k rpm. At 20% methanol:water, only 32% of the 'recommended' methanol charge is going in. My intercooler seems really effective anyway, so the cooling effect of a small charge of wmi is probably not making a significant difference. (as Wilco said earlier). The question is, what is happening with the methanol that is being injected?

I have CFs of 3 virtually across the board from about 3k to 5.5 k. This is fairly evenly on the run-up to peak torque and down the other side of the curve. Is my fuelling rich through that range, such that the added methanol makes no difference?

I'm happy to repeat last night's runs after an ecu reset if it's thought worthwhile.

running the 50/50 mix will richen your afr more but will give you more ign headroom.
I think you are on the right track... cooling contribution on an already cooled charge is minimal on a low water/meth mix

add 50/50 and you CF will go, dial in more timing and relog, then add some using lemmi (or equivalent)

3 degrees on standalone ecu gave 10bhp as a guide

 

[DPJ]

Thanks Bill, I think we can crack this.

I've got over my hurdle by using the simple expedient of doing a Vag-Com TBA after each SPS3 setting change.

The car's still got quite a bit of 20% methanol in. It's too dark to drain it and remix, so I've been trying to use it up.

I did a number of runs tonight and the results are interesting. More on that later. Here's the last run.

T8 HB9 20% wmi 10 degrees outside.

Wednesday	7	November	2007	20:17:36			
06A 906 032 HN		1.8L R4/5VT         0002					
							
'003				'020			
Idle speed	Air mass in	Throt Angle	Ignit Angle	Idle Stabilization	Idle Stabilization	Idle Stabilization	Idle Stabilization
700-820 rpm	2.0-4.5 g/s	0.2-4.0%	0-12 BTDC				
3360	61.64	31	26.3	0	0.8	0	0
3520	87.92	99.2	24.8	0	0.8	0	0
3800	114.83	100	14.3	0	0.8	0	0
4080	149.14	100	12	0	0.8	0	0
4360	177.11	100	7.5	0	0.8	0	0
4720	195.97	100	10.5	0	0.8	0	0
5000	202.83	100	12	0	0.8	0	0
5320	194.42	100	12.8	0	0	0	0
5560	196.64	100	10.5	0	0	0	0
5840	211.44	100	11.3	0	0	0	0
6080	209.39	100	12.8	0	0	0	0
6280	217.94	100	14.3	0	0	0	0
6480	221.81	100	18	0	0	0	0
6680	220.11	100	18	0	0	0	0
6840	219.33	100	20.3	0	0	0	0
7000	216.67	100	20.3	0	0	0	0
7200	214.5	100	22.5	0	0	0	0
7200	218.39	42.4	0.8	0	0	0	0

This gives me huge confidence I can move beyond T9 on 50% methanol.

 

[PhilW]

Lookin good fair play dave, but i dont get how the knock has dropped so much since your previous logs on lower settings.

 

[DPJ]

Lookin good fair play dave, but i dont get how the knock has dropped so much since your previous logs on lower settings.

Resetting adaptation, Phil.
I put it to T8 then did a TBA. The run I posted was the sixth. I didn't want to bore people by posting them all, but with each consecutive run, the CFs were coming down.

 

[PhilW]

Cool, i've read that the CF's come down with adaption, i've seen it myself as well.

Glad its running sweet tho.

 

[DPJ]

Cool, i've read that the CF's come down with adaption, i've seen it myself as well.

Glad its running sweet tho.

Thanks Phil. I'll get some 50% methanol in on Friday, hopefully. I'm looking forward to getting to grips with Lemmiwinks.

 

[Martyn]

Didnt I tell you ages ago to do a reset before playing with your SPS dude?

 

[DPJ]

Didnt I tell you ages ago to do a reset before playing with your SPS dude?

Yes you certainly did, Martyn. The thing was, I thought it meant battery disconnect. I didn't realise a TBA would suffice. (Until I reread the sps3 guide yesterday! - if all else fails, read the instructions )

 

[UncleFester]

Yes you certainly did, Martyn. The thing was, I thought it meant battery disconnect. I didn't realise a TBA would suffice. (Until I reread the sps3 guide yesterday! - if all else fails, read the instructions )

Oh dear .... surely not a case of RTFM - how could you Dave and with all your extra years of common sense too

 

[Martyn]

At least you're getting somewhere now Dave

 

[PhilW]

So its worth doing a TBA when messing with settings?

I added +3º and didnt do a TBA, worth doing to see if it makes a difference?

 

[DPJ]

...............with all your extra years of common sense too

So its worth doing a TBA when messing with settings?

I added +3º and didnt do a TBA, worth doing to see if it makes a difference?

It appears to reset adaptation, Phil. I was interested to see that it took a few runs for the ECU to learn and pull CFs down after that (the first run had some 6s). I was going to kick around the figures from the other runs today, but I've gone and left them on my laptop. (No Patrick, not senility, too much on! #)

 

[UncleFester]

(No Patrick, not senility, too much on! #)

I was just about to pick you up on that but saw the last line just in time - not old age just dodgy eyesight that isn't age related

 

[DPJ]

I was just about to pick you up on that but saw the last line just in time - not old age just dodgy eyesight that isn't age related

........can I do it a little bit and wear glasses?

...

 

[UncleFester]

Gawd i actually thought for a moment I wrote the last bit - i see your forgetfulness and raise you two senilities!!!