Since last year I noticed a feature of the TT alky chips and have recently tried out some new chips from Eric. I think the results will benefit a lot of people at the track with TT alky chips. I think Eric is working on a fix for those who race with the alky chips.
After going through some of my Directcan logs from my clone last year after being disappointed with the 60fts, I noticed that I wasn't getting full timing on the launch and it was adding it in after a little delay. I figured this wasn't that good for the an optimal 60ft. The TT alky chips, at least the recent ones, pull timing until a short delay after the MAF is maxed out. This is done to prevent transitional knock on the street as an instant rise in timing can give some knock if you go WOT quickly when using alky.
After reviewing lots of logs, I noticed that the delay would be pretty bad on a softer launch. On a very high boost launch, the delay would be much shorter as the MAF maxed out a lot sooner. My GN plus two other cars I know were running alky on a non alky TT chip. The non alky chips didn't have the timing delay and these cars also 60ft'd very well. My GN had a 1.58 60ft on the street chip with a stock turbo, but my clone barely got into the 1.6 60fts on a TE44.
Here are some Directscan screengrabs showing the timing delay. The first picture shows the timing (Spark Advace) at 18.6 degrees on the launch. The chip was set to 25/22 timing but didn't get to 25 degree timing until I was at 17mph, as shown in the second picture. The third picture is a screengrab where the timing didn't come in until I was at 25mph.
I got another chip from Eric where there was no timing delay based on MAF. I did notice some transitional knock on the street, so I turned up the initial gain inside the PAC box on my alkycontrol setup and also set the turnon point a little sooner. The alky light turns over from red to green much sooner and the tansitional knock is almost non existant on the street now. The last picture is a screengrab with my new TT alky chip with no timing delay and is the run from my clone in the sig from yesterday. The timing was set to base 23/21 and full timing was there way before I launched and there was no knock whatsoever.
On the old chip, my best 60ft was a 1.64 with most of the 60fts high 1.6s to low 1.7s. On the new chip, my best 60ft is 1.53 with most of the 60ft being mid 1.5s to low 1.6s. The main difference between the chips was that on the old chip with the timing delay, I had to leave with a lot of boost but it still didn't hit hard because the timing wasn't there. Sometimes I could feel the timing kick in when I was 20ft out. The new chip hits a lot harder off the line and I think I'll be in the 1.4s soon in my clone on a TE44 after 1.55 and 1.53 60fts yesterday with a lot of room to launch harder.
I would like to thank Eric from TT for his help on this and always working to make the best chips better.
After going through some of my Directcan logs from my clone last year after being disappointed with the 60fts, I noticed that I wasn't getting full timing on the launch and it was adding it in after a little delay. I figured this wasn't that good for the an optimal 60ft. The TT alky chips, at least the recent ones, pull timing until a short delay after the MAF is maxed out. This is done to prevent transitional knock on the street as an instant rise in timing can give some knock if you go WOT quickly when using alky.
After reviewing lots of logs, I noticed that the delay would be pretty bad on a softer launch. On a very high boost launch, the delay would be much shorter as the MAF maxed out a lot sooner. My GN plus two other cars I know were running alky on a non alky TT chip. The non alky chips didn't have the timing delay and these cars also 60ft'd very well. My GN had a 1.58 60ft on the street chip with a stock turbo, but my clone barely got into the 1.6 60fts on a TE44.
Here are some Directscan screengrabs showing the timing delay. The first picture shows the timing (Spark Advace) at 18.6 degrees on the launch. The chip was set to 25/22 timing but didn't get to 25 degree timing until I was at 17mph, as shown in the second picture. The third picture is a screengrab where the timing didn't come in until I was at 25mph.
I got another chip from Eric where there was no timing delay based on MAF. I did notice some transitional knock on the street, so I turned up the initial gain inside the PAC box on my alkycontrol setup and also set the turnon point a little sooner. The alky light turns over from red to green much sooner and the tansitional knock is almost non existant on the street now. The last picture is a screengrab with my new TT alky chip with no timing delay and is the run from my clone in the sig from yesterday. The timing was set to base 23/21 and full timing was there way before I launched and there was no knock whatsoever.
On the old chip, my best 60ft was a 1.64 with most of the 60fts high 1.6s to low 1.7s. On the new chip, my best 60ft is 1.53 with most of the 60ft being mid 1.5s to low 1.6s. The main difference between the chips was that on the old chip with the timing delay, I had to leave with a lot of boost but it still didn't hit hard because the timing wasn't there. Sometimes I could feel the timing kick in when I was 20ft out. The new chip hits a lot harder off the line and I think I'll be in the 1.4s soon in my clone on a TE44 after 1.55 and 1.53 60fts yesterday with a lot of room to launch harder.
I would like to thank Eric from TT for his help on this and always working to make the best chips better.
