[M.a.r.k.u.s]

Hey guys,

this morning on the way to work I was next to a Ferrari F360 and we played around a little bit. we did a few runs from 60 to about 100 and were more or less even. I just barely pulled on him but not enough to really matter.

The reason this was possible is because I caught a good day and my car was definitely flying. Unfortunately, this isn't always the case. Don't get me wrong, it's always pretty fast but there are noticeable differences depending on the day or time. Now I know that the JB4 basically hijacks the various sensors it is connected to and the DME is "fighting" this. Is it possible that this sometimes works better than other times? That's the only thing I can think of that would make sense here. If that is in fact the case, would having a Cobb AP V3 help? Or is there no real benefit to stacking a Cobb with a JB4?

Thanks for the input!

[marCOCOpuffs]

Mods? On mobile so I can't see your signature, but if you're fbo I would figure you could take him pretty easily.

Cobb AP will help with more consistent feel I've heard

[M.a.r.k.u.s]

Originally Posted by marCOCOpuffs

Mods? On mobile so I can't see your signature, but if you're fbo I would figure you could take him pretty easily.

Cobb AP will help with more consistent feel I've heard

I'm FBO minus aftermarket fmic. It was a Challenge Stradale...pretty light and fast those things

[tc535i]

what map are you on?

[evo335xi]

Cooler temps and less heatsoak will make a huge difference on a pull. Especially map 5 where boost can be +- 3 or 4 psi.

[M.a.r.k.u.s]

Originally Posted by tc535i

what map are you on?

Map 5.

This happens in Map 2 as well though.

[M.a.r.k.u.s]

Originally Posted by evo335xi

Cooler temps and less heatsoak will make a huge difference on a pull. Especially map 5 where boost can be +- 3 or 4 psi.

hmmm so maybe I need to pull the trigger on that fmic...

[Sidewinderpb]

The struggle is real brother. Mine's hit-or-miss also. Some days, the car will take off like a rocket - and other days, it lacks any "oomph."

[JETmn]

Same here. Some days it is quick and sometimes it hauls ass. I have a stage 1 turbo on the way and I am thinking of making the jump to the AP with a custom tune.

[Mike@N54Tuning.com]

Originally Posted by M.a.r.k.u.s

Hey guys,

this morning on the way to work I was next to a Ferrari F360 and we played around a little bit. we did a few runs from 60 to about 100 and were more or less even. I just barely pulled on him but not enough to really matter.

The reason this was possible is because I caught a good day and my car was definitely flying. Unfortunately, this isn't always the case. Don't get me wrong, it's always pretty fast but there are noticeable differences depending on the day or time. Now I know that the JB4 basically hijacks the various sensors it is connected to and the DME is "fighting" this. Is it possible that this sometimes works better than other times? That's the only thing I can think of that would make sense here. If that is in fact the case, would having a Cobb AP V3 help? Or is there no real benefit to stacking a Cobb with a JB4?

Thanks for the input!

The JB4 is an adaptive system and will only increase performance in situations when its appropriate and safe for the weather, octane, and conditions.

Mike

[tomtom11]

you said this morning. so it was probably cooler outside. ambiant air temps make a big difference in how this car performs it seems like to me. if it gets heat soak when its hot out your power wont be great. at least thats my experience

[iuhutch]

Originally Posted by M.a.r.k.u.s

Map 5.

This happens in Map 2 as well though.

I've been working on map 6 to try to prevent dynamic changes as everyday is different and i also believe this can prevent confusion over time to the dme logging. Find more info on this here: http://www.n54tech.com/forums/showthread.php?t=26044

One thing that I would really like is more control over AFRs as the n55 platform with JB4, in almost every log (esp without backend flashes) runs lean >13:1.

[M.a.r.k.u.s]

Originally Posted by tomtom11

you said this morning. so it was probably cooler outside. ambiant air temps make a big difference in how this car performs it seems like to me. if it gets heat soak when its hot out your power wont be great. at least thats my experience

I wish it was that easy. A couple of days ago I got on an on ramp in the afternoon when it was 95 degrees out, stepped on it and was almost shocked at how fast the car took off. Later that night after it had cooled down considerably and I was on my way home it was nowhere near as quick. Heatsoak couldn't have been an issue because it had been driving like a grandma until I finally got on it. This was all on the same tank of gas too so no change in octance (which there shouldn't be anyways since I always use premium).

[tc535i]

Originally Posted by M.a.r.k.u.s

Map 5.

This happens in Map 2 as well though.

map 5 would make sense, since it's constantly adapting

dunno why map 2 would do it tho

[M.a.r.k.u.s]

Originally Posted by iuhutch

I've been working on map 6 to try to prevent dynamic changes as everyday is different and i also believe this can prevent confusion over time to the dme logging. Find more info on this here: http://www.n54tech.com/forums/showthread.php?t=26044

One thing that I would really like is more control over AFRs as the n55 platform with JB4, in almost every log (esp without backend flashes) runs lean >13:1.

This is great! I've never messed with it because I honestly don't know enough about what's safe to run and what isn't but I might try the same settings as you have on map 6 and see how it does. Only questions I have, since I don't have a dct, does my shift boost reduction need to be set different than yours? and what is future use b? mine is currently set to 0

Thanks!

[M.a.r.k.u.s]

I also don't run E85 on a regular basis. Any idea what the max psi is I should set for pump gas (92 octane)?

[iuhutch]

Originally Posted by M.a.r.k.u.s

I also don't run E85 on a regular basis. Any idea what the max psi is I should set for pump gas (92 octane)?

~15 to 16; gut tells me to try a max of 15.5 where i have 18

Also start off with lower tapers going up and down from max boost in RPM...

[M.a.r.k.u.s]

Originally Posted by iuhutch

~15 to 16; gut tells me to try a max of 15.5 where i have 18

Also start off with lower tapers going up and down from max boost in RPM...

I'll give that a shot. Thanks!

[M.a.r.k.u.s]

So since I need to pull the trigger on a fmic anyways, I'd love to get some input. Seems like kind of a no-brainer to go with VRSF as they have the best deal by far and it sounds like they're right up there in quality, I'm trying to decide between the 7" or their new stepped core 5". They cost the same so I'm just looking for pros and cons to make a decision. Thanks!

[madmanhiker]

I run map 3 with FBO +meth. It's consistent and I run in 95+ degrees near sea level and 80-90% humidity. It's definitely quicker in the fall/winter/spring where temp ranges are around 40-70 degrees for sure. The thing that had the biggest impact to [heatsoak] as it's most applicable to me was the FMIC. It doesn't add any horsepower and if it does it's negligible... what it does it lower IAT's and that translates into more consistent runs. Good luck and happy tuning! Stay safe!

[weehe126]

Originally Posted by M.a.r.k.u.s

So since I need to pull the trigger on a fmic anyways, I'd love to get some input. Seems like kind of a no-brainer to go with VRSF as they have the best deal by far and it sounds like they're right up there in quality, I'm trying to decide between the 7" or their new stepped core 5". They cost the same so I'm just looking for pros and cons to make a decision. Thanks!

There is about an hours worth of trimming with the 7" and supposedly none with the 5". If you plan on keeping it or you are not on a lease go 7", if not go 5".

[mike@x-ph.com]

Originally Posted by M.a.r.k.u.s

Hey guys,

this morning on the way to work I was next to a Ferrari F360 and we played around a little bit. we did a few runs from 60 to about 100 and were more or less even. I just barely pulled on him but not enough to really matter.

The reason this was possible is because I caught a good day and my car was definitely flying. Unfortunately, this isn't always the case. Don't get me wrong, it's always pretty fast but there are noticeable differences depending on the day or time. Now I know that the JB4 basically hijacks the various sensors it is connected to and the DME is "fighting" this. Is it possible that this sometimes works better than other times? That's the only thing I can think of that would make sense here. If that is in fact the case, would having a Cobb AP V3 help? Or is there no real benefit to stacking a Cobb with a JB4?

Thanks for the input!

the stock intercooler suffers even with no mods.
add the that 10 psi of boost and you get inconsistency all day long.
its time to get that intercooler