The Official 370Z Autocross Thread

[Brendan]

Originally Posted by gomer_110

For those of you that are trying to get the 370Z moved from STR to STU and haven't heard about the new push to open up boost limits in the ST classes, you might want to start writing your letters opposing it now.

Long story short, since it's not possible to verify the boosted cars aren't altering their boost control via ecu tuning there is a big push to allow open boost for the turbo cars in the ST classes. If this goes through you'll end up with STU being spec boost buggies which obviously would hurt the 370Z if it ever gets moved there.

How do you feel about the notion that allowing them to increase boost without allowing them to increase injector or tire size wont net them enough of a benefit? I spoke to a local stu competitor who estimates he will only be able to get an extra 15 hp unless he is allowed to supporting fuel mods.

[gomer_110]

Originally Posted by Brendan

How do you feel about the notion that allowing them to increase boost without allowing them to increase injector or tire size wont net them enough of a benefit? I spoke to a local stu competitor who estimates he will only be able to get an extra 15 hp unless he is allowed to supporting fuel mods.

Was talking to a past STU national champ out at nationals who's familiar with both the boost buggies. According to what he was saying, the STI won't gain much but the Evo's will gain quite a bit. This was based on him tuning a STU Evo at one point and then for grins playing with the boost tables to see the difference.

The other thing to consider is the area under the curve. Just because the car doesn't have huge gains up top doesn't mean the usable power and torque don't increase dramatically.