Nissan 370Z Tech Forums banner

1 - 4 of 4 Posts

·
Registered
Joined
·
1,955 Posts
Discussion Starter #1
Here are the dynos from the install of the SMT6 and the a pulley swap.I had the 9lb pulley set from ATI and utilized only one of them.Meaning we used the pulley on the back of the blower only for about a 1/2 lb in boost difference..The first blue line represents the stock ATI pulley combo and no timing control..The second dyno in red you can see we lost a few PEAK hp due to pulling out some timing relative to boost in the upper psi range utilizing a MAP sensor.But look at the GAIN through the rpm range!!at 4000 rpm's we gained 61hp!!!!and an average of 30 hp through the rpm range...Keep in mind this was done with the 1 pulley and with some timing pulled up top to be safe.We experimented with the timing a bit and I hit 425rwhp uncorrected on one run but we decided to pull back the timing just in case and see how the car runs on the street for a while..I am going back in to him soon to get some more tuning as we are still experimenting with the tuning and want to see if a few weeks of running it changes anything on the dyno results.
 

Attachments

·
Registered
Joined
·
1,955 Posts
Discussion Starter #2
Here is the TQ curve.This is where we were truly amazed and we arent finished tuning as you can see by the A/F is a little rich yet. But @ 3700rpms we gained 82TQ!!!!As you can see by the 2 dyno's the tuning of the SMT6 made the most difference rather than attributing all the gains to the pulley.Look at the gains in the 2000-4000 rpms range where boost is just starting to kick in...These results were amazing!!We will be doing more tuning in the near future and utilizing some race gas and playing with the timing and a/f some more..This was just to set the unit up and get it running..One thing we found is that by adding the 2nd half of the 9lb pulley we actually didnt gain anything..It definitely dumped more fuel in but we lost tq and hp cause we didnt want to lean it out any until we seen if the car runs well with this combo on the street..Bob Ida is a custom hot rod builder and has been tuning for 45+years and has a very scientific and cautious approach to tuning which I can admire and respect..We will continue to test the limits with the support of MRC motorsports(Jason) and Bob Ida of IDA automotive

daking350 has attached this image:
 

Attachments

·
Registered
Joined
·
1,955 Posts
Discussion Starter #4
$1200 installed,tuned(unlimited dyno passes),and software...You can buy it for less online but good luck installing and tuning it..Now keep in mind I lost 5hp at redline but I gained a shitload of USEABLE hp in the RPM range..
 
1 - 4 of 4 Posts
Top