After the purchase, insurance, registration, taxes, -20kHow much money do you have to spend?
After the purchase, insurance, registration, taxes, -20kHow much money do you have to spend?
Looking at some tune shops with that engine, some got it to tune up to 9k on their 2GR-FE… so I would think 8k would be easier, keeping the same bhp… but I’ll settle for 6.8k…. That’s like my 22’ g70… that redline comes up sooo quick though….My understanding from JUBU product descriptions is that some of their ECUs/tunes allow for a higher redline but I'd highly doubt it's anywhere near 8K. I'd be happy with 7,000-7200 and not have it cut the power so hard although admittedly I didn't get much of a chance to test the rev limiter during my test drive.
Once warranty is out I'll be strongly considering the 460hp option but it's a bit premature for those decisions until we're driving the car around for longer periods IMHO.
I'm really surprised that more folk don't comment on that 'hard' limiter.I'd be happy with 7,000-7200 and not have it cut the power so hard .........
Yeah good call on the 7.2K RPM. It does appear that's what they rev it out to. Also notice where the peak power is in the below translated numbers from the following screenshot (hint: it's materially beyond the factory cut-off):I'm really surprised that more folk don't comment on that 'hard' limiter.
It's my biggest complaint of the Emira setup, Too low, and too abrupt., it's SOOO abrupt, feels like someone pulls a wire off as it touches the limiter, rather than just stutter at the redline. I hate it.
Given the tech at hand, including the fly by wire throttle, you'd think they could give us a nice soft limiter.
I know the power charts suggest a flat torque curve right up to the limiter, but when I drive it, it feels like it really wakes up in the final 1500rpm. This prompts me to try and use all of that narrow but fun band, which in turn, means I'm prone to touching the dreaded, ultra harsh rev limiter, especially in the first couple of gears, where the numbers whizz by oh-so-fast, making it very hard to judge the lift/shift point as close to the limit as possible.
My thoughts are that historically, revving an engine out, it was easy to judge the point where it was time to shift, as you could feel the benefit of revving any higher was fading, this would usually happen before finding the red line & limiter. The Emira on the other hand, feels like that horrid limiter kills everything just as the motor is REALLY waking up, making it easier to accidentally stumble into. Most annoying.
I note watching the video of the JUBU 460 Emira on the rolling road (with replacement ECU) when it touches the limiter, that sounds softer, and more traditional, just a stammer, rather than total cut.
See it here:
Also looks like they have it revving to 7200 ish according to their charts.. Sounds nice.
.......should be well under 4.0 secs to 60 despite the slow shift into 2nd........
That's odd. According to the charts you show, the 435 actually makes more peak torque than the 460, but just doesn't rev as high.Yeah good call on the 7.2K RPM. It does appear that's what they rev it out to. Also notice where the peak power is in the below translated numbers from the following screenshot (hint: it's materially beyond the factory cut-off):
7,200 RPM redline
464hp @ 7,070rpm
360ft lb torque @ 4,630rpm
View attachment 34852
I have to think with this kit the Emira should be well under 4.0 secs to 60 despite the slow shift into 2nd. It is essentially a 15% increase in HP and roughly 16% in torque AND more time to use both based on the dyno results.
Unless I just love the power as is, this will be hard to resist come warranty expiration time. In my view, this would tip the Emira into it legitimately being fast enough in a straight line to support its supercar looks. It's probably very unnecessary on the road but I'm sure it would increase the fun factor by a decent margin.
EDIT: I did also notice their 435 version does NOT seem to have the higher redline and has much less low-end torque (between around 2-3.5K RPMs) compared to the 460:
View attachment 34854
That's beyond my area of expertise in terms of the peak torque throughput as it seems puzzling to me. Based on the charts, though, the freer-breathing manifolds and cats in the 460 definitely appear to give it much more oomph at low RPMs. I think that will make it FEEL quite a bit faster than it probably is in terms of straight-line speed.That's odd. According to the charts you show, the 435 actually makes more peak torque than the 460, but just doesn't rev as high.
Is this a product of running the stock cast exhaust manifolds and pre-cats?? Or am I missing something? Confused of Shepperton.