Ovtune ECU tuning experience/review
#61
Lead Lap
iTrader: (1)
Also does anyone know how long it will take them to finish this project and how much it will cost? I'm too excited over this.
#62
Lexus Champion
That's exactly what I was trying to say. If it makes power all the way to 8k rpm then that would make the tune for our cars truly amazing. But if it revs to 8k but power drops at lets say 7400 rpm then the 8k is pointless. But hopefully something like that can be achieved because if it is, then I can finally beat my buddy's 350z HR lol.
#63
Driver
Monkey Wrench Racing offer stage 1 and stage 2 cams for the 2GR-FE - stage 1 for 7000rpm+ and stage 2 for 7500rpm+. I'd say the 2GR-FSE would be similar (maybe it even shares the same camshaft as the FE?) So I doubt it would make power past 7200-7400rpm. The 2UR in the IS-F doesn't make power past 7200rpm from memory so I don't see why the GR engines would.
Monkey Wrench Racing also states that the valve springs should to be upgraded for 7000rpm+
Monkey Wrench Racing also states that the valve springs should to be upgraded for 7000rpm+
#64
Lexus Champion
Monkey Wrench Racing offer stage 1 and stage 2 cams for the 2GR-FE - stage 1 for 7000rpm+ and stage 2 for 7500rpm+. I'd say the 2GR-FSE would be similar (maybe it even shares the same camshaft as the FE?) So I doubt it would make power past 7200-7400rpm. The 2UR in the IS-F doesn't make power past 7200rpm from memory so I don't see why the GR engines would.
Monkey Wrench Racing also states that the valve springs should to be upgraded for 7000rpm+
Monkey Wrench Racing also states that the valve springs should to be upgraded for 7000rpm+
#65
If anyone wants an educational read regarding tuning the ECU for the 2GR, there's a very informative thread from the MR2 folks that have done a 2GR-FE swap:
http://www.mr2oc.com/188-v6-mr2-foru...n-removed.html
They too are taking advantage of the higher 7,200 RPM rev limit for their 2GR-FE engines as well as reference the Lotus-tuned 2GRs as the benchmark for ensuring that this is a safe rev limit (as I had done for pleading the 7200 RPM case with the 2GR-FSE version).
There are some discussions in the later portions of that thread with regards to tuning the ECU for higher rev limits such as 7,500 or 8,000 RPMs though they too recommend that the valve springs, at minimum, be upgraded for reliability purposes.
Perhaps one of them will be a candidate/guinea pig for testing the 7,500-8,000 RPM rev limit to see if the powerband continues to remain at peak HP and to see if the internals of the 2GR can handle an RPM increase of over 1,000 RPMs beyond the stock rev limit.
http://www.mr2oc.com/188-v6-mr2-foru...n-removed.html
They too are taking advantage of the higher 7,200 RPM rev limit for their 2GR-FE engines as well as reference the Lotus-tuned 2GRs as the benchmark for ensuring that this is a safe rev limit (as I had done for pleading the 7200 RPM case with the 2GR-FSE version).
There are some discussions in the later portions of that thread with regards to tuning the ECU for higher rev limits such as 7,500 or 8,000 RPMs though they too recommend that the valve springs, at minimum, be upgraded for reliability purposes.
Perhaps one of them will be a candidate/guinea pig for testing the 7,500-8,000 RPM rev limit to see if the powerband continues to remain at peak HP and to see if the internals of the 2GR can handle an RPM increase of over 1,000 RPMs beyond the stock rev limit.
Last edited by redspencer; 10-27-16 at 06:26 AM.
#66
Driver
Lotus likely left a bit of a safety margin when choosing the 7200rpm rev limit for the Evora so I'm sure 7400-7500rpm is possible without causing any damage. As for the powerband - I'm sure a regrind of the cams could ensure power all the way to redline.
On another note.. the 4GR in the is250 has a 6mm shorter stroke than the 2GR so mean piston speed will be lower. Potentially the IS250 could safely rev higher than the IS350.
On another note.. the 4GR in the is250 has a 6mm shorter stroke than the 2GR so mean piston speed will be lower. Potentially the IS250 could safely rev higher than the IS350.
#67
Lexus Champion
Im not sure if anyone would wanna risk their car to test that higher rev limit theory to be honest. But from what I've heard, RR Racing has their own 3is now for testing. So if anyone is gonna do it, it's likely them. Hopefully it's possible as that would be awesome But if it requires Cams or valves then hopefully they can engineer some nice aftermarket replacements.
#69
Lead Lap
iTrader: (1)
The 2GR FE and 2GR FSE probably use the same valve springs, I don't know about the camshafts though. Figures more internals than just springs probably need to be swapped to be able to safely rev that high.
https://monkeywrenchracing.com/produ...fe-v6-stage-2/
^ Those guys make cams for the 2GR FE engine that rev to 7500+. Does the FSE engine have the same cam specs as the stock FE ones?
Stock cam specs: Duration 235I/235E, Lift 10.9mmI/10.9mmE
MWR cam specs: Duration 266I/266E, Lift 11.67mmI/11.67mmE
If they don't work perhaps one of us can contact them and see if they can tweak them slightly for the FSE engine?
https://monkeywrenchracing.com/produ...fe-v6-stage-2/
^ Those guys make cams for the 2GR FE engine that rev to 7500+. Does the FSE engine have the same cam specs as the stock FE ones?
Stock cam specs: Duration 235I/235E, Lift 10.9mmI/10.9mmE
MWR cam specs: Duration 266I/266E, Lift 11.67mmI/11.67mmE
If they don't work perhaps one of us can contact them and see if they can tweak them slightly for the FSE engine?
#70
The 2GR-FE and 2GR-FSE do not have the same valve springs or camshafts.
Some other information that may be relevant:
2UR-GSE titanium valves should fit the 2GR-FSE head.
2GR-FSE valve springs are also used in the 1UR-FSE and 2UR-FSE. Perhaps the 2UR-GSE valve springs could be used as well as the valves? They do have a longer free length.
Jeff
Some other information that may be relevant:
2UR-GSE titanium valves should fit the 2GR-FSE head.
2GR-FSE valve springs are also used in the 1UR-FSE and 2UR-FSE. Perhaps the 2UR-GSE valve springs could be used as well as the valves? They do have a longer free length.
Jeff
#71
Lead Lap
iTrader: (1)
The 2GR-FE and 2GR-FSE do not have the same valve springs or camshafts.
Some other information that may be relevant:
2UR-GSE titanium valves should fit the 2GR-FSE head.
2GR-FSE valve springs are also used in the 1UR-FSE and 2UR-FSE. Perhaps the 2UR-GSE valve springs could be used as well as the valves? They do have a longer free length.
Jeff
Some other information that may be relevant:
2UR-GSE titanium valves should fit the 2GR-FSE head.
2GR-FSE valve springs are also used in the 1UR-FSE and 2UR-FSE. Perhaps the 2UR-GSE valve springs could be used as well as the valves? They do have a longer free length.
Jeff
#72
I had actually said in my previous post that I wasn't sure if it was worth while as the 2UR doesn't have a higher redline, but apparently I deleted that sentence, lol.
Still, Ti valves are cool, lol.
I have had no issue with my 2GR going to 7200rpm. Been quite happy with it.
Jeff
Still, Ti valves are cool, lol.
I have had no issue with my 2GR going to 7200rpm. Been quite happy with it.
Jeff
#73
Lead Lap
iTrader: (1)
I had actually said in my previous post that I wasn't sure if it was worth while as the 2UR doesn't have a higher redline, but apparently I deleted that sentence, lol.
Still, Ti valves are cool, lol.
I have had no issue with my 2GR going to 7200rpm. Been quite happy with it.
Jeff
Still, Ti valves are cool, lol.
I have had no issue with my 2GR going to 7200rpm. Been quite happy with it.
Jeff
#74
Driver School Candidate
Join Date: Apr 2015
Location: CA
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I started talking to the people at ovtuned.com a few weeks back and have decided to sign up for their "phase 1" thing. Apparently they have done work with the 2gr-fe engines and have been able to do transmission tunes for some Toyota transmissions. Hopefully they will be able to come up with a decent tune with the functional higher rev that our cars could really use. I wan't to use this thread to post updates on my experience with them. So far they have been fairly prompt to respond to emails, even some that would be after business hours. I will be mailing out my ecu tomorrow and with any luck I hope to be testing it out this weekend.
#75
Intermediate
Thread Starter
It looks like they are now getting around to getting deeper into tuning the 2gr-fse engine. I was skeptical for a while on how much effort would be put into the is350, but it looks like they are committed to going all out with tuning our ecu. There is a short read on some of the work they have done https://www.ovtuned.com/blogs/news/o...libration-info