Track forum general chit chat.

[OG Shark]

Originally Posted by StripclubDJ

Just time attack fun
Nothing wheel to wheel for this thing, it's to pretty lol

Yeah we've had 2 weekends so far and he's trying to get comfortable with it after not tracking for a year . It's ALOT to take in at once as you can imagine, not driving for that long then coming back in driving a full stupid race trim car lol
All I can say is it's flippin fast


Car is full bolt on, e85, hks trans cooler etc.
About 620whp or more , we are gonna do a retune to see where we stand right now.
No plans to add any more power at this time, reliability is main priority .

Suspension is full SPL everything
JRZ rs pros 1200/1000 300 psi
Brembo 4 piston GTR race only billet front brake kit with pro system rotors
305 square pirreli scrubs for now
Moving to a 12in square wheel setup soon with 315 square

Nothing special I guess lol

Indeed it is too pretty to get torn up wheel to wheel - that is a freaking work of art. Going to be an absolute rocket like it is but I bet its not too long and he's back to upgrade the turbos, trans, etc. Awesome work on your part and congrats to the owner - I'll quit slobbering over it now.

And its still a GTR - no need to get comfortable - they pretty much drive themselves. Just get in and gas to the floor & let the computer figure out the rest

[StripclubDJ]

Originally Posted by jktx

Indeed it is too pretty to get torn up wheel to wheel - that is a freaking work of art. Going to be an absolute rocket like it is but I bet its not too long and he's back to upgrade the turbos, trans, etc. Awesome work on your part and congrats to the owner - I'll quit slobbering over it now.

And its still a GTR - no need to get comfortable - they pretty much drive themselves. Just get in and gas to the floor & let the computer figure out the rest

I appreciate that bud!
And yeah a trans a turbo upgrade will most likely come later down the road when the chassis is fully sorted


But that's the Main issue , when I said get comfortable , I meant with the everything off lol
With the amount of aero and tire he's gonna have I want him to rely on mechanic grip , not the YAW rate control lol

When I was doing the wiring I should of cut the yaw sensor out and sent it lol

[dparm]

Originally Posted by jktx

Just discovered why 20” wheels aren’t that popular on the track... priced some 285/35/20s NT01s to go on my stock gtr wheels that are collectingdust in the garage. Ugh, I shat myself.

Now you see why I was always mad when I had to replace my Corvette's tires. No selection other than the OEM PSS or PSC2. Almost $2000 a set.

My Forgelines are 18 all around and only about $1500 for Rivals.

[OG Shark]

Originally Posted by StripclubDJ

I appreciate that bud!
And yeah a trans a turbo upgrade will most likely come later down the road when the chassis is fully sorted


But that's the Main issue , when I said get comfortable , I meant with the everything off lol
With the amount of aero and tire he's gonna have I want him to rely on mechanic grip , not the YAW rate control lol

When I was doing the wiring I should of cut the yaw sensor out and sent it lol

Formal request for it to be brought to COTA so we can see that thing run...

Originally Posted by dparm

Now you see why I was always mad when I had to replace my Corvette's tires. No selection other than the OEM PSS or PSC2. Almost $2000 a set.

My Forgelines are 18 all around and only about $1500 for Rivals.

Its ridiculous - twice what I paid for the 275/35/18s NT01s on the M3. Don't want to take the steps to be able to add more camber so probably going to burn through them quick too. Ugh

Wouldn't have guessed 18s would clear the brakes on your car - that's awesome.

Since you are a corvette guy figure you will probably appreciate the below (it's not mine). Should be venturing out to COTA late spring early summer.

[StripclubDJ]

Originally Posted by dparm

Now you see why I was always mad when I had to replace my Corvette's tires. No selection other than the OEM PSS or PSC2. Almost $2000 a set.

My Forgelines are 18 all around and only about $1500 for Rivals.

And mounting and balancing the stock vette sizes/ run flats

I'll never do it again lol
Damn near impossible to bead

[StripclubDJ]

And I'm gonna try to get the gtr there in February or sometime next year hopefully

[kyippee]

Yummy yummy, my suspension parts that are installed now

https://www.facebook.com/10110068797...6686302802976/

[M3 Number 86]

Originally Posted by ThunderMoose

Better yet put up your dyno plot including AFR.

Figured it out. A week after the car threw a P0171 code - running too lean. To compensate, the car was throwing more fuel which caused the o2 sensor from the dyno to read really rich. We replaced the sensors and test drove to see if codes came back and it didn't. We then threw it on the dyno again to get a reading.

I have a valved exhaust and the way the piping is set up it seemingly makes it hard to get an accurate read from the dyno o2 sensor put in the tail pipes. From what we can tell, the car stopped compensating and afr levels looked better. Since we thought the readings weren't accurate and to test our theory, we closed the valves and stuck the sensor into the inner tail pipe. Then afr reading was perfect. In conclusion, something about the routing of the pipes when opened makes it hard to get an accurate reading (air could be blowing in all directions giving an inaccurate read?).

I'm picking up an MS stage 2 intake tomorrow and swapping to my previous exhaust setup and will complete the retune once Epic has a look at it. I'll post plots when we're done.

[M3 Number 86]

On another note, I had the dreaded Christmas tree lights: ABS/DBC/DSC/hill start/TPM error. I pulled out my trusty obd scanner but quickly realized it's of no use and can only pull cel related codes. Did some research on here and it pointed to abs sensor or dsc unit or abs pump and steering wheel sensor.

I connected my aim solo DL, put it into point to point mode and created a "track" in my neighborhood and logged the data.

Came home and looked at the individual wheel speed plots and what do you know, left rear sensor is dead and reads 0 mph the whole time. I think this also had something to do with an off I had the last event. I applied the brakes normally but I flew off the track which seemed a little strange. Maybe one wheel was acting up and locked up? I remember dogbone was talking about something similar in his other thread. Wonder if it could be related?

Pictures of data plot plus result of flying off track

[roastbeef]

Originally Posted by M3 Number 86

On another note, I had the dreaded Christmas tree lights: ABS/DBC/DSC/hill start/TPM error. I pulled out my trusty obd scanner but quickly realized it's of no use and can only pull cel related codes. Did some research on here and it pointed to abs sensor or dsc unit or abs pump and steering wheel sensor.

I connected my aim solo DL, put it into point to point mode and created a "track" in my neighborhood and logged the data.

Came home and looked at the individual wheel speed plots and what do you know, left rear sensor is dead and reads 0 mph the whole time. I think this also had something to do with an off I had the last event. I applied the brakes normally but I flew off the track which seemed a little strange. Maybe one wheel was acting up and locked up? I remember dogbone was talking about something similar in his other thread. Wonder if it could be related?

Pictures of data plot plus result of flying off track

Sounds very similar as to what dogbone had going on.

[M3 Number 86]

My pics didn't load?

[ThunderMoose]

Originally Posted by M3 Number 86

My pics didn't load?

Please...don't be a tease.

Let's see the dyno plot!

I have a page on my DL display with all 4 wheel speeds to check on stuff like that.

[bigjae1976]

Originally Posted by ThunderMoose

I have a page on my DL display with all 4 wheel speeds to check on stuff like that.

That's a great idea!

[M3 Number 86]

Originally Posted by ThunderMoose

Please...don't be a tease.

Let's see the dyno plot!

I have a page on my DL display with all 4 wheel speeds to check on stuff like that.

Yeah I plotted after a drive in racestudio.

edit: uploads of files keep failing, from phone and from computer.

I'll post dynochart shortly!!!

[M3ANMACHINE]

Ho Lee Fak That Gtr!!!

[M3ANMACHINE]

Originally Posted by kpewpew

Yummy yummy, my suspension parts that are installed now

https://www.facebook.com/10110068797...6686302802976/

Exact setup i'm gonna pickup soon

Looking forward to your thoughts!

[kyippee]

Originally Posted by M3ANMACHINE

Exact setup i'm gonna pickup soon

Looking forward to your thoughts!

It's amazing! Just picked up my car today. Started off at 12/24 clicks, was hardly any more rough than my stock EDC on comfort.

Some more NVH from GC race camber plates but it's not bad. Just clunking over rough SF streets. This setup is light years ahead of the old Koni Yellow shocks I ran on my E46 M3, Koni was crap!

Currently on 5/24 as recommended for street. Haven't had a chance to see how it feels with some cornering G force. Shop said from a test drive it's on rails. Need a track day to really test it out!

[roastbeef]

I can't wait to experience that feeling.

[kyippee]

Originally Posted by roastbeef

I can't wait to experience that feeling.

Mr. Beef, what's your setup now? Still on the stock suspension?

[roastbeef]

Oem and camber plates.

[Shmelgy]

So I had a pretty shitty day today at Laguna Seca. First run of the day I went into limp mode after the warm up lap- code P0302. After searching auto shops nearby for a spark plug, I found a dealer and replaced the spark plug in cylinder 2. I cleared the code and went back out. Same thing. Swapped coil packs with a different cylinder, and no luck.

Once I go over 7k, the engine just gives out and goes into limp mode. I tried chasing the problem all day and eventually just went out and kept the revs under 6k. Didn't throw a code but obviously wasn't as enjoyable.

Does anyone have a similar experience and hopefully solution that can be done at the track? I've heard the following possibilities: faulty fuel pressure sensor, an issue with the o2 sensors, and possibly "bad fuel." One tech at the track thought it could be related to not tuning the car for the new 4.10 gears but I was told the diff is "plug and play" for the most part.

Worst case, I'll just work on my line tomorrow and not go chasing times.

[Richbot]

If it’s just one hole and doesn’t move with the coil pack could it be an injector? Or maybe a valve spring broken and you’re getting misfires as an early warning? Just spitballing I’m clueless