tigeo
Autocross Champion
- Location
- Richmond, VA area
A few updates as it's been a while.
1) I ended up removing the ECS air scoop I had put in last year. It just didn't fit the non-honeycomb (GTI + AT) grille well and I rigged it and well, I wasn't happy with it. Bought a new grille and tossed it the scoop. Just recently I find that ECS has modified them to fit the R grille (same as the Golf) so maybe I'll make another attempt if I'm bored. I don't see that it adds any value really beyond "look at this" at C&C or "I'm bored and need to mod to feed my addiction"..hahaha
2) United Motorsport Haldex tune. Bottom line - yeah, it helps with the added power I'm pushing. I've had some runs in the twisted at Alpine Volks Fair and it was great. Here's my write up.
United Motorsport Haldex tune - it's transferring more power!
Per Fred at United, the stock setup can transfer a max of 50% of the available torque. Stock that was 199 lb-ft so theoretically 50% can be transferred for ~100 lb-ft. The tune is supposed to remove that limit and allow 50% of whatever power you are making so for me on the IS38/Unitronic, that's around 325 per Uni's dyno sheet so I should now be able to get 50% of that for 162 lb-ft. I was getting a max of roughly 30% of the available before the tune.
The Graph shows a standing launch pre- and post-tune logging within the brake control unit (3) the awd channel "nM". This is clearly not the actual torque but some proxy/measurement that the ECU uses and matches roughly what United's graph on their site looks like so figured this was the way to do it.
I didn't take the post-tune run up to the same speed as the pre-tune run so that's why the post-tune line drops off out on the right. OBDEleven sucks big-time for logging and doesn't always use the same interval for data points - I did the best I could normalizing them and some of the slight differences in the 2 graphs' trend matching each other are most likely related to that but it's close enough.
Now for the big f-up on my part...I should have done a pre-run before my visit to New German Performance...forgot that the one I had was from last June when I was still on the IS20 (wha wha whaaaaaa)...what does that mean? I don't think much b/c the torque for both tunes is v. close, more hp on the 38 but torque is about the same (310 vs. 324) and I believe this is just showing power transfer so I *think* the graph would have looked about the same on the IS38 pre-Haldex tune but I'll never know now.
Datazap file:
https://datazap.me/.../pre-vs-post-haldex-tune-launch...
1) I ended up removing the ECS air scoop I had put in last year. It just didn't fit the non-honeycomb (GTI + AT) grille well and I rigged it and well, I wasn't happy with it. Bought a new grille and tossed it the scoop. Just recently I find that ECS has modified them to fit the R grille (same as the Golf) so maybe I'll make another attempt if I'm bored. I don't see that it adds any value really beyond "look at this" at C&C or "I'm bored and need to mod to feed my addiction"..hahaha
2) United Motorsport Haldex tune. Bottom line - yeah, it helps with the added power I'm pushing. I've had some runs in the twisted at Alpine Volks Fair and it was great. Here's my write up.
United Motorsport Haldex tune - it's transferring more power!
Per Fred at United, the stock setup can transfer a max of 50% of the available torque. Stock that was 199 lb-ft so theoretically 50% can be transferred for ~100 lb-ft. The tune is supposed to remove that limit and allow 50% of whatever power you are making so for me on the IS38/Unitronic, that's around 325 per Uni's dyno sheet so I should now be able to get 50% of that for 162 lb-ft. I was getting a max of roughly 30% of the available before the tune.
The Graph shows a standing launch pre- and post-tune logging within the brake control unit (3) the awd channel "nM". This is clearly not the actual torque but some proxy/measurement that the ECU uses and matches roughly what United's graph on their site looks like so figured this was the way to do it.
I didn't take the post-tune run up to the same speed as the pre-tune run so that's why the post-tune line drops off out on the right. OBDEleven sucks big-time for logging and doesn't always use the same interval for data points - I did the best I could normalizing them and some of the slight differences in the 2 graphs' trend matching each other are most likely related to that but it's close enough.
Now for the big f-up on my part...I should have done a pre-run before my visit to New German Performance...forgot that the one I had was from last June when I was still on the IS20 (wha wha whaaaaaa)...what does that mean? I don't think much b/c the torque for both tunes is v. close, more hp on the 38 but torque is about the same (310 vs. 324) and I believe this is just showing power transfer so I *think* the graph would have looked about the same on the IS38 pre-Haldex tune but I'll never know now.
Datazap file:
https://datazap.me/.../pre-vs-post-haldex-tune-launch...