Tested: New Tuning Option for STR!
#81
I did some datalogging for ignition, A/F, etc, that I still have to go through and provide some analysis and review of as well. Will get to that next.
Not sure if everyone will share your feelings in regards to cost effectiveness of the tune for peak power gains. If you look at the overall improvement, 10-15hp across the range, the subjective improvement in driveability, slightly more fuel efficient, and what feels like a nice bump between 3,000-4,800rpm, I think it was a decent gain. Not much else I can do in terms of mods now anyways, so I'll take what I can get.
I will be hitting the track sometime soon, and the trap speed mph will be more indicative where my STR stands in terms of power.
With that said, because my dynapack numbers read a bit lower than most other STR figures we've seen, it stands to reason the gains in proportion to total power are also slightly smaller. In other words, you guys dyno'ing 350whp on a dynojet for instance, might net a bit more from the tune than what I did.
I still have a water/meth injection kit I been meaning to install, so I may just get around to doing that this week. I might stick to the shell 91 v-power this way, otherwise, I think I will be making a permanent switch to the top-shelf 94 octane.
Last edited by GT42R; 10-15-2013 at 11:30 AM.
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Cambo (10-15-2013)
#82
Real life measured numbers finally!!
Thanks for all your work. It was not a big increase but we now know it's possible to get the STR tuned.
Who knows, with more cars tuned and more experience for the tuner maybe the power increase will get bigger. We really are just beginners in this and more is to be found out with time.
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Thanks for all your work. It was not a big increase but we now know it's possible to get the STR tuned.
Who knows, with more cars tuned and more experience for the tuner maybe the power increase will get bigger. We really are just beginners in this and more is to be found out with time.
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#84
Would be nice to to see someone else repeat this same test on their STR/4.2SC car, just to see the difference in gains.
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Cambo (10-15-2013)
#87
#88
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You'd be hard pressed to find anything labelled 'Canadian Bacon' up here, that's pretty much an American thing. I'd never tasted it 'till I visited family in Maine.
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Jumpin' Jag Flash (10-16-2013)
#89
Every time we get up to Canada we head to the Wexford for a great breakfast and extra bacon. Eh with a cold Blue on the side. great way to start the day
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Jumpin' Jag Flash (10-16-2013)
#90
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Yep, the real Canadian stuff is called peamale (probably spelled wrong) it is the real deal. Down here in Texas they try to pass off small round bits of ham as Canadian bacon. How wrong they are.
Every time we get up to Canada we head to the Wexford for a great breakfast and extra bacon. Eh with a cold Blue on the side. great way to start the day
Every time we get up to Canada we head to the Wexford for a great breakfast and extra bacon. Eh with a cold Blue on the side. great way to start the day
You're right about the peameal- very common here and further west. It's the real deal.
(sorry for the hijack Jake- congrats again on the great post).
#91
I had my car on the dyno this morning to see how the AFR's looked after finally replacing the collapsed rear muffler.
The power numbers don't mean much in the end as it's not the same dyno as the previous run. But the AFR's had improved (leaned) considerably compared to before, presumably because of replacing the dead muffler.
The tuner estimated "maybe 10HP" to be had from adjusting the AFR's, which is inline with what's be demonstrated here. It went as rich as 11.5:1, and he would have brought it to ~12:1, so not a big change, & not big gains to be had.
In my case ~$1500 to fit an interceptor to the MAF and run it on the dyno for a day for 10HP = not worth it.
The local Viezu agent quoted me $1000 for a flash tune for 25HP and 30Nm, but you can take those numbers with a grain of salt, as we've seen now.
Thanks for being a guinea pig on this one. Big thumbs up!
The power numbers don't mean much in the end as it's not the same dyno as the previous run. But the AFR's had improved (leaned) considerably compared to before, presumably because of replacing the dead muffler.
The tuner estimated "maybe 10HP" to be had from adjusting the AFR's, which is inline with what's be demonstrated here. It went as rich as 11.5:1, and he would have brought it to ~12:1, so not a big change, & not big gains to be had.
In my case ~$1500 to fit an interceptor to the MAF and run it on the dyno for a day for 10HP = not worth it.
The local Viezu agent quoted me $1000 for a flash tune for 25HP and 30Nm, but you can take those numbers with a grain of salt, as we've seen now.
Thanks for being a guinea pig on this one. Big thumbs up!
Last edited by Cambo; 10-15-2013 at 07:05 PM.
#92
Yes, thanks for making the leap! It is good to know that there is a reasonable path to a custom tune out there.
I honestly don't understand why those interceptors cost so much, there really isn't all that much to them.
I've started playing with the 85mm one of these: Abaco Performance LLC
Only been running with it for about a week, so I can't speak for reliability, but being able to easily modify the MAF curve yourself is pretty nice.
I've started playing with the 85mm one of these: Abaco Performance LLC
Only been running with it for about a week, so I can't speak for reliability, but being able to easily modify the MAF curve yourself is pretty nice.
#93
The bulk of the cost for an interceptor is the install & the dyno time. The box itself is only like $300, but a full day on the dyno, if it's $100 an hour, you can see where the money goes.
Now if GTR42's tune can be dropped into anyones car for $800 and it delivers 10-15HP, its a much better proposition right?
I'm curious to know what else Eurocharged can do with our ECU's.
- Up the rev limit?
- Extend the air/fuel table for higher boost applications?
- Change the diff ratio?
What else is on the wish list?
Now if GTR42's tune can be dropped into anyones car for $800 and it delivers 10-15HP, its a much better proposition right?
I'm curious to know what else Eurocharged can do with our ECU's.
- Up the rev limit?
- Extend the air/fuel table for higher boost applications?
- Change the diff ratio?
What else is on the wish list?
#94
So the one tuner that gets the most with a tune, doesn't have to be the safest one, something to keep in mind besides that a tune is specific for a setup, and most tunes are based for stock cars!
If you want to have the sharpest tune, then the best way is to take out the knock control, use your own knock sensors, check on the dyno where the limit is that knocks happen, and then take back the tune to safer level. This is costly and requires also some tooling/knowledge from the tuner. Some tuners will not search for the limit and just take a modest setting.
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jag79 (02-17-2014)
#95
So, Avos, if I get your drift, after an ECU tune on an already highly factory-tuned Jag with 3rd party add-ons like filters, input elbows and pulleys, you should now protect your engine by using the highest octane gas available?
#96
agreed, i rather leave some safety margin than attempt to tune it to very edge; would be pretty foolish to try and chase those minimal gains,
and as i mentioned earlier, on the third dyno pull we had detected ping around 5,000rpm, leading me to believe this tune is plenty aggressive as is,
i am considering installing this water.meth kit and sticking with shell 91 v-power, or making a permanent switch to sunoco94 which is available at certain stations around here...
and as i mentioned earlier, on the third dyno pull we had detected ping around 5,000rpm, leading me to believe this tune is plenty aggressive as is,
i am considering installing this water.meth kit and sticking with shell 91 v-power, or making a permanent switch to sunoco94 which is available at certain stations around here...
#97
Yes, at least that is what I would do and what I recommend. Although not big, it does give extra protection again. Over here I only us 98 ron fuel, think that is 93 aki or so for you in the US.
#98
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#99
Stock Tune:
First pull: 310.7hp / 335.6lb-ft
Second pull: 317.4hp / 338.9lb-ft
Third pull: 306.2hp / 326.1lb-ft
Eurocharged Tune:
First Pull: 324.5hp / 342.9lb-ft
Second Pull: 321.5hp / 342.0lb-ft
Third Pull: 315.4hp / 333.4lb-ft (let off early)
Fourth Pull: 322.6hp / 332.7lb-ft (ECU Reset)
After going through some datalogs of the dyno runs, I would like to clarify and expand on a few things,First pull: 310.7hp / 335.6lb-ft
Second pull: 317.4hp / 338.9lb-ft
Third pull: 306.2hp / 326.1lb-ft
Eurocharged Tune:
First Pull: 324.5hp / 342.9lb-ft
Second Pull: 321.5hp / 342.0lb-ft
Third Pull: 315.4hp / 333.4lb-ft (let off early)
Fourth Pull: 322.6hp / 332.7lb-ft (ECU Reset)
On the third dyno run with the eurocharged tune, we netted 315.4hp / 333.4lb-ft,
This run the dyno operator slightly let off around 5,000rpm due to ping, and did not complete the pull at 100% throttle.
I wouldn't consider this a 'valid' run,
The fourth and following pull, we netted 322.6hp / 332.7lb-ft,
So, lets average the three stock tune runs: 311.4hp / 333.5lb-ft,
Now, lets average the three tuned runs (1, 2, exclude 3, and 4): 322.8hp / 339.2lb-ft
This results in an average gain of 11.4hp and 5.7lb-ft, figures which looks a bit better than the two best before/afters overlaid,
Now, lets average the three tuned runs (1, 2, exclude 3, and 4): 322.8hp / 339.2lb-ft
This results in an average gain of 11.4hp and 5.7lb-ft, figures which looks a bit better than the two best before/afters overlaid,
Looking at the each set of three dyno runs, suggests the eurocharged tune puts out more consistent power, a good thing... maybe...
Further more, based on the logs, the dyno operator was trying to avoid the transmission kicking down from 4th to 3rd gear, so he would be about 80-90% throttle into the 4,000+ rpm range,
This sort of effects the peak torque figures as it sort of depends on when the dyno operator chooses to hit it, so take it with a grain of salt, but i believe we could establish a better idea of overall torque gain if it was possible to dyno a little lower in the rpm band,
Some more food for thought fellas,
Last edited by GT42R; 10-17-2013 at 12:11 PM.
#100
Stock Tune:
First pull: 310.7hp / 335.6lb-ft
Second pull: 317.4hp / 338.9lb-ft
Third pull: 306.2hp / 326.1lb-ft
Eurocharged Tune:
First Pull: 324.5hp / 342.9lb-ft
Second Pull: 321.5hp / 342.0lb-ft
Third Pull: 315.4hp / 333.4lb-ft (let off early)
Fourth Pull: 322.6hp / 332.7lb-ft (ECU Reset)
After going through some datalogs of the dyno runs, I would like to clarify and expand on a few things,First pull: 310.7hp / 335.6lb-ft
Second pull: 317.4hp / 338.9lb-ft
Third pull: 306.2hp / 326.1lb-ft
Eurocharged Tune:
First Pull: 324.5hp / 342.9lb-ft
Second Pull: 321.5hp / 342.0lb-ft
Third Pull: 315.4hp / 333.4lb-ft (let off early)
Fourth Pull: 322.6hp / 332.7lb-ft (ECU Reset)
On the third dyno run with the eurocharged tune, we netted 315.4hp / 333.4lb-ft,
This run the dyno operator slightly let off around 5,000rpm due to ping, and did not complete the pull at 100% throttle.
I wouldn't consider this a 'valid' run,
The fourth and following pull, we netted 322.6hp / 332.7lb-ft,
So, lets average the three stock tune runs: 311.4hp / 333.5lb-ft,
Now, lets average the three tuned runs (1, 2, exclude 3, and 4): 322.8hp / 339.2lb-ft
This results in an average gain of 11.4hp and 5.7lb-ft, figures which looks a bit better than the two best before/afters overlaid,
Now, lets average the three tuned runs (1, 2, exclude 3, and 4): 322.8hp / 339.2lb-ft
This results in an average gain of 11.4hp and 5.7lb-ft, figures which looks a bit better than the two best before/afters overlaid,
Looking at the each set of three dyno runs, suggests the eurocharged tune puts out more consistent power, a good thing... maybe...
Further more, based on the logs, the dyno operator was trying to avoid the transmission kicking down from 4th to 3rd gear, so he would be about 80-90% throttle into the 4,000+ rpm range,
This sort of effects the peak torque figures as it sort of depends on when the dyno operator chooses to hit it, so take it with a grain of salt, but i believe we could establish a better idea of overall torque gain if it was possible to dyno a little lower in the rpm band,
Some more food for thought fellas,