So what sort of tricks would this TDI be pulling to increase the boost pressure, maintain safe AFR, whilst keeping the ECU happy that it’s functioning normally?
Not too familiar with how this sort of device.
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I4 tuning box development - who wants one?
- Thread starter steveoexige
- Start date
Not too familiar with how this sort of device.
TDI Tuning | How & Why Tuning Boxes Work
An innovator in custom tuning systems for a vast variety of vehicles. Get up to 40% power and 20% MPG. With over 15 years of experience in the tuning industry.
tdi-tuning.com
Well my box has been shipped and is on the way. Additionally, this was a response from my inquiry about latest numbers
"The latest dyno session for the Emira is Tuesday, April 15th.
Based on the results, we will make final updates that will be made available for reflash afterwards"
"The latest dyno session for the Emira is Tuesday, April 15th.
Based on the results, we will make final updates that will be made available for reflash afterwards"
Like I said, its the lock Mercedes puts on to prevent Lotus is the problem.
Yes I am aware
There is probably so many things that are integrated I would think not. I'm going to see how this TDI turns out before getting too crazy. Especially under warranty. 440hp and 390ftlbs. of torque should keep me happy for a while. Not to mention a Downpipe and HF cat
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Not what I’d describe as a detailed explanationTDI Tuning | How & Why Tuning Boxes Work
An innovator in custom tuning systems for a vast variety of vehicles. Get up to 40% power and 20% MPG. With over 15 years of experience in the tuning industry.
You know what it is, just a piggyback like racechip. =pNot what I’d describe as a detailed explanation
Same here ...cleared Miami and delivey Monday...but only 400 miles on the clock lol
RaynesCars
Member
- Mar 13, 2025
- 5
- 0
- Status:
- Emira Owner
Hi Steve, I’m booked in this Thursday to get fitted. How did the dyno go today?
steveoexige
Member
- May 27, 2024
- 24
- 39
- Thread starter
- #95
Good day today, TDI got the car on the dyno for some base runs and then tweaks to the software in their box to see what's possible whilst checking temps and error codes, etc to ensure the car was running fine and happy.
Baseline run was interesting: 379bhp and 420Nm. That's more bhp than I was expecting but slightly lower torque. The car picked up on the fact the front wheels weren't turning so threw up an error code and CEL light which TDI quickly read and cleared. All runs were carried out in 5th gear, Track mode with ESC switched off.
After trying out a few different settings and tweaks TDI settled on a repeatable 431bhp and 470Nm which we achieved on multiple runs. Engine temps were good with just the standard dyno setup (no extra fans required) and even though the photo shows the engine compartment up we actually did most of the runs with it closed. At this level the car ran the same numbers repeatedly with no issues whatsoever.
I haven't had much of a chance to drive the car on the final map other than the drive home which was pouring with rain. Already though the mid range is much improved, and through the final 2k it really punches hard - performance is significantly improved. I'll test the car over the coming days and report back.
For those wanting more (me), a sports cat and maybe a decent panel filter or intake kit will see a safe 450/460bhp and 500Nm. If cooling becomes an issue (highly likely for track days) I'm talking to a tuner about an inexpensive uprated chargecooler. All in I'd estimate £3k in spend to get there. To put that into perspective I had to spend north of £10k on my Exige V6 engine to achieve similar numbers and even the trans blew which meant another £8k getting that rebuilt stronger.
Right now though having 430bhp on tap via a well developed tuning box for a few hundred £'s that I can easily remove is an absolute no brainer.
A big thank you to Jake, Steve and the team at TDI for their R&D getting to understand the i4 Emira. The i4 is unlike an A45s M139 AMG, or V6 Emira when it comes to the sensors, etc so its been no small feat but worth the time and effort.
Baseline run was interesting: 379bhp and 420Nm. That's more bhp than I was expecting but slightly lower torque. The car picked up on the fact the front wheels weren't turning so threw up an error code and CEL light which TDI quickly read and cleared. All runs were carried out in 5th gear, Track mode with ESC switched off.
After trying out a few different settings and tweaks TDI settled on a repeatable 431bhp and 470Nm which we achieved on multiple runs. Engine temps were good with just the standard dyno setup (no extra fans required) and even though the photo shows the engine compartment up we actually did most of the runs with it closed. At this level the car ran the same numbers repeatedly with no issues whatsoever.
I haven't had much of a chance to drive the car on the final map other than the drive home which was pouring with rain. Already though the mid range is much improved, and through the final 2k it really punches hard - performance is significantly improved. I'll test the car over the coming days and report back.
For those wanting more (me), a sports cat and maybe a decent panel filter or intake kit will see a safe 450/460bhp and 500Nm. If cooling becomes an issue (highly likely for track days) I'm talking to a tuner about an inexpensive uprated chargecooler. All in I'd estimate £3k in spend to get there. To put that into perspective I had to spend north of £10k on my Exige V6 engine to achieve similar numbers and even the trans blew which meant another £8k getting that rebuilt stronger.
Right now though having 430bhp on tap via a well developed tuning box for a few hundred £'s that I can easily remove is an absolute no brainer.
A big thank you to Jake, Steve and the team at TDI for their R&D getting to understand the i4 Emira. The i4 is unlike an A45s M139 AMG, or V6 Emira when it comes to the sensors, etc so its been no small feat but worth the time and effort.
I think so they're tuning in the UK (I assume). So wonder what a US/China 400hp gain will be, I think somewhere in the 30/40hp gain - very cool! I mean, that is a pretty affordable way to get that much power. Really excited to try it out...really I just want the torque curve to move to the left (which this does) and get on boost way faster
steveoexige
Member
- May 27, 2024
- 24
- 39
- Thread starter
- #98
Yes mines the 360bhp UK spec. Bearing in mind the box achieved a relatively easy 50bhp and 50Nm you should see 450bhp on your US i4's.
I'd love to time some runs using a GPS draggy box, with the DSG shifting in track mode I reckon it will be very quick now
I'd love to time some runs using a GPS draggy box, with the DSG shifting in track mode I reckon it will be very quick now
Well it seems the AMG unit is 19hp under-rated or the calibration was off. Going off that it seems its 50hp gain. So yes, 450hp or more
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