JordanS4

Logs on just N75. No timing graph. MAF peaks around 260 g/s

<img src="http://i51.photobucket.com/albums/f361/jordanshahin89/02values.jpg">
<img src="http://i51.photobucket.com/albums/f361/jordanshahin89/N75Boost.jpg">
<img src="http://i51.photobucket.com/albums/f361/jordanshahin89/N75Boost2copy.jpg">
<img src="http://i51.photobucket.com/albums/f361/jordanshahin89/BoostN75only3copy.jpg">

Logs on MBC only. Timing and MAF included but no O2. (Ran out of gas)

<img src="http://i51.photobucket.com/albums/f361/jordanshahin89/Boostquickspool.jpg">
<img src="http://i51.photobucket.com/albums/f361/jordanshahin89/BoostLogss.jpg">
<img src="http://i51.photobucket.com/albums/f361/jordanshahin89/MAFMBCOnly.jpg">
<img src="http://i51.photobucket.com/albums/f361/jordanshahin89/timing1.jpg">
<img src="http://i51.photobucket.com/albums/f361/jordanshahin89/timing2.jpg">

All done about 35 degrees, full weight tip S4 with stereo equipment, less thank 1/8th tank, very flat stretch of road. Notice quicker spool (graphs don't represnt it well but spools quicker in vaccuum, smoother part throttle, more power up top) with MBC only and less taper. Also it takes the same amount of RPM's to boost about 6-7 psi more. Yes I'm spiking 22 psi on K03's, yes I'm crazy. Also on the MBC only runs the throttle % was below 30% for entire duration. I don't know why, I don't have the TCD installed yet, but I wasn't getting throttle cut and the car was pulling hard as hell. Also if someone wants to help me out with TIP FATS, its 4100-6350? Here is my data for that.

38.4 3840
39.32 4240
40.27 4760
41.28 5240
42.33 5680
43.42 6080
44.54 6440

By my estimates it's around 39.0 at 4100 RPM and 44 flat near 6350 RPM, so 5.0 FATS is safe to assume?

JordanS4

RPM MAF Throttle %

2440 44.89 16.1
2680 68.56 20
2920 72.5 18.4
3240 83.86 19.2
3560 100.86 20.4
2800 93.11 20
3000 95.78 19.2
3240 110.25 20
3480 150.5 22
3960 252.44 29.8
4440 263.83 31.4
4920 279.61 35.3
5360 286.58 38.8
5800 286.58 38
6160 285.11 37.3
6560 285.64 38.8

2000SForce.free

better performance. I would drop back to 20 that is what they seem to max at(what V***performance set my car to. Me and u have the exact same car mod wise but i have a tcd. My car ran a 5 flat with a driver and a big boy passenger in this high 30* low 40* temp. I also have a hole in the air box. I see no reason why you should not hit a 5 flat.

JordanS4

yeah I checked out the efficency map. 20 is more reasonable. I'll probably turn it down tomorrow.

Flyboy

Keep the units the same for the Y-axis, reporting one set of boost values in mBar and the other in PSI makes comparing data difficult.

Rescale the lower X-axis to 2000 rpm, any lower and it just squeezes the meaningful information into a smaller space.

Use the correct data names in the legend. Series-1 and series-2 doesn't help show what data is being presented.

And a suggestion about making comparisons, include like data. Boost and timing vary closely with one another. It would be useful to see what the timing with the N75 was.

And a question about your observation, if your throttle position was at 30% throughout a pull where you had the accelerator pedal to the floor, why don't you think that is throttle cut?

AdvanSport

and was it in parallel or did you remove the n75?

UberVier

and a little dorky too, for being such a young modder.

:P

JordanS4

as far as graphing goes, yes I suck at graphing . I'll clean those graphs up. Thanks for the suggestions. I didn't feel like converting the data into PSI for MBC only because of the fact that the boost didn't matter, it was more for spool characteristics and taper for comparison. I have some timing logs for N75 only, will post them after my hockey game. I'll try to do another log to check out throttle position.

JordanS4

MBC only and its Vast (in my sig)

BlackS4tt (Josh)

it occurs right at that huge boost spike. get rid of that boost spike and you can probably smooth out your timing curve a lot.