4.08 gear swap

jchammond · 12-29-2016, 04:06 PM

Quote:

Originally Posted by masons169

nik swapped my uprev tune over to ecutec and really did a fantastic job with it. night and day difference.he was also the one who suggested installing whiteline bushings while the chunk was out . they really know their way around these cars. being a 100 miles away helps. also

Did you have the Tune swapped before/after the 408 install, or all at the same time?

masons169 · 12-29-2016, 07:15 PM

he did the tune back in january, that made a BIG difference in drivability.the gears really woke it up. that was just last week. they did a great job. they recomended the bushing as well. no more wheel hop. even on cold pavement. cant wait till summer. the launch control may work great then, without blowing the tires off.

astro932 · 01-01-2017, 08:36 AM

so question, does srm still work? and does it mess with the speedo?

masons169 · 01-01-2017, 08:43 AM

yes it still works. i think its off just a touch, but not really noticable.

jchammond · 01-01-2017, 08:46 AM

Speedometer should be dead on with factory diameter tires; as the speed sensors (2) are located on the output stub shafts...they read it there/ so 3.36,3.69,4.08,4.36 shouldn't change speedometer.....not sure about other features.

Elmo370z · 01-01-2017, 02:05 PM

Or ecu tek can tune for 4.08 gears

Optimiser · 01-01-2017, 08:51 PM

Quote:

Originally Posted by jchammond

Speedometer should be dead on with factory diameter tires; as the speed sensors (2) are located on the output stub shafts...they read it there/ so 3.36,3.69,4.08,4.36 shouldn't change speedometer.....not sure about other features.

Except 370Z's are out by about 10Kmh at 100Kmh. My speedo reads 100Kmh when I'm going about 90Kmh.

jchammond · 01-01-2017, 09:25 PM

Quote:

Originally Posted by Optimiser

Except 370Z's are out by about 10Kmh at 100Kmh. My speedo reads 100Kmh when I'm going about 90Kmh.

That's 10% (6.2mph) either you have put very short tires on your ~Z~ or something else is going on....mine is near perfect with new rear tires (26.8,26.9") but as they wear down,you can get 1 to 1.5mph slower than readings of speedo....only 1-2%.
You may want to have something looked at/as i haven't heard of one being that far off.

12-29-2016, 07:15 PM	#17 (permalink)
masons169 Base Member Join Date: Nov 2014 Location: duncan sc Age: 61 Posts: 18 Drives: 2014 6mt sport gm Rep Power: 11	he did the tune back in january, that made a BIG difference in drivability.the gears really woke it up. that was just last week. they did a great job. they recomended the bushing as well. no more wheel hop. even on cold pavement. cant wait till summer. the launch control may work great then, without blowing the tires off. __________________ gen3, z1 intake, aam TP, nismo CBE, ecutek,4.08,whiteline, 329hp 265tq

01-01-2017, 08:36 AM	#18 (permalink)
astro932 Base Member Join Date: Nov 2015 Location: Nebraska Posts: 119 Drives: 11 370z M6 Rep Power: 10	so question, does srm still work? and does it mess with the speedo? __________________ 6M vert My Build

01-01-2017, 08:43 AM	#19 (permalink)
masons169 Base Member Join Date: Nov 2014 Location: duncan sc Age: 61 Posts: 18 Drives: 2014 6mt sport gm Rep Power: 11	yes it still works. i think its off just a touch, but not really noticable. __________________ gen3, z1 intake, aam TP, nismo CBE, ecutek,4.08,whiteline, 329hp 265tq

01-01-2017, 08:46 AM	#20 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 58 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684395	Speedometer should be dead on with factory diameter tires; as the speed sensors (2) are located on the output stub shafts...they read it there/ so 3.36,3.69,4.08,4.36 shouldn't change speedometer.....not sure about other features. Elmo370z likes this. __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

01-01-2017, 02:05 PM	#21 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,727 Drives: 09 nissan 370z Sp M6 Rep Power: 295379	Or ecu tek can tune for 4.08 gears ChaseZ likes this.

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