timing advance and VQ35 swaps
#1
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From: Montreal, Qc, Canada
timing advance and VQ35 swaps
Quick question about timing advance. I know it's a very common mod for 5th gens to advance timing from 14-15 to 17, but what about us 4th gens with 3.5/3.0 ECU? What are our options? I assume this can't be done like with the 2k+ guys, right? Could we still run as much timing as them?
#5
http://www.perfectpower.com/Products/smt7.asp
I've seen the older version SMT6 go on eBay for cheap once in awhile.
I've seen the older version SMT6 go on eBay for cheap once in awhile.
#7
No...eManage can NOT advance timing although many claim it can, since the ignition harness only intercepts the output to the coils. I wish it could though.
SMT7 intercepts the crank/cam position sensor input to the ECU, so it can "lie" to a point and fool the ECU into advancing.
Apexi SAFC directly modifies MAF voltage to the ECU, which indirectly affects injector pulsewidth. That does affect timing somewhat, but not really what you want.
SMT7 intercepts the crank/cam position sensor input to the ECU, so it can "lie" to a point and fool the ECU into advancing.
Apexi SAFC directly modifies MAF voltage to the ECU, which indirectly affects injector pulsewidth. That does affect timing somewhat, but not really what you want.
#8
+5 degree timing advance using SMT-6 vs older dyno
These are two graphs of dyno pulls that I did. One is from a year ago and the other is from Feb using the SMT-6. I didn't adjust A/F at all, so don't go to much into these it's just a taste of things to come.
Before my car went under the knife for numerous mods and repairs I had the timing set to + (9~11) on the high end and let me tell you the car hauled a$$.
Im currently working on an circuit board application to make the SMT-6 operate trouble free in the 4th gens and possibly the 2k~2k1s. The 2k2 ECUs operate on a different premise and may need the SMT-7 to work.
These are two graphs of dyno pulls that I did. One is from a year ago and the other is from Feb using the SMT-6. I didn't adjust A/F at all, so don't go to much into these it's just a taste of things to come.
Before my car went under the knife for numerous mods and repairs I had the timing set to + (9~11) on the high end and let me tell you the car hauled a$$.
Im currently working on an circuit board application to make the SMT-6 operate trouble free in the 4th gens and possibly the 2k~2k1s. The 2k2 ECUs operate on a different premise and may need the SMT-7 to work.
#10
Originally Posted by JClaw
How much you paid for the SMT6? Also why didn't you adjust A/F?
How much do you think someone would charge me to adjust timing? I imagine the dealer could do this to my 95?
How much do you think someone would charge me to adjust timing? I imagine the dealer could do this to my 95?
Dealer would just laugh if you brought this in for tuning... Your better off doing it yourself on a dyno.
#11
Care to explain what problems there are?
Originally Posted by 98SEBlackMax
Im currently working on an circuit board application to make the SMT-6 operate trouble free in the 4th gens and possibly the 2k~2k1s. The 2k2 ECUs operate on a different premise and may need the SMT-7 to work.
#13
Originally Posted by IceY2K1
Care to explain what problems there are?
Most of those problems have been taken care of, but I need my car back to get rid of everything and do a nice dyno.
Hopefully if all goes as planned I will have a dyno with the 2k VI and advanced timing. Also on a side note the SMT controls the VI as well.
#14
Originally Posted by kevlo911
Crank line signal is weird, so RPM has spikes in the SMT.
If the 2k2 ECU's are like the Altima and 350z ECU's, they should use the SMT6 w/o any probs. J
If the 2k2 ECU's are like the Altima and 350z ECU's, they should use the SMT6 w/o any probs. J
Trust me if I can't make it trouble free I won't bother talking about it anymore than I already have. Its at this point Im starting to feel confident about getting it right, I hope.
#16
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Supporting Maxima.org Member
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From: Montreal, Qc, Canada
Originally Posted by 98SEBlackMax
Im currently working on an circuit board application to make the SMT-6 operate trouble free in the 4th gens and possibly the 2k~2k1s. The 2k2 ECUs operate on a different premise and may need the SMT-7 to work.
Also how much for an SMT6 w/all needed software?
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