Stock 3.5 IM vs. VIAS delete vs. SSIM dyno comparo
#1
Thread Starter
Supporting Maxima.org Member
iTrader: (8)
Joined: Apr 2003
Posts: 9,116
From: Miami, FL
Stock 3.5 IM vs. VIAS delete vs. SSIM dyno comparo
VERY interesting read. Link was originally posted in the 5th gen forum I believe but I thought it'd do more good here.
http://www.nissanclub.com/forums/eng...-vs-stock.html
http://www.nissanclub.com/forums/eng...-vs-stock.html
#3
Supporting Maxima.org Member
iTrader: (29)
Joined: Oct 2005
Posts: 4,572
From: Middleboro/Carver, Ma
I have a post up there near the end, have been meaning to go back in there and will later tonight to let those guys know that within the next week I will be at the dyno again to test just a block-off plate, I found that VERY interesting, if not hard to swallow, and am curious if there wasn't anything else going on.
#4
Very interesting results. But it really comfirms what folks have been saying on here. You have to optimize your own setup. When I first had SSIM done my lowend was just as sucky as people said it would be and the topend was just as great as people said. Now 5 intake setups later lol, my lowend and topend are great and its time to move to other modifications.
#7
True on the mod part, my SSIM, as is when installed, made my car slower, but through the following months, it was optimized.
This past weekend I hooked the WB back up, cleaned the air filter, changed the oil and well, I'm back.
#8
This is very interesting information. Makes me glad I didnt do the ssim. I have been staring at the NWP block plate since June now and have been too lazy to do it due to the cutting of the manifold. I guess Ill just throw the block plate on!
#9
With an extended rev limiter it would prove the SSIM to be a more useful mod. Even more so with a set of cams and a great tune.
I want to see the A/F curve......
I want to see the A/F curve......
Last edited by Deckdout2; 11-07-2008 at 06:22 PM.
#12
Thats very cool of you to do all three dynos and present that info. For how much of a difference there is though...I really dont think I'm going to go to the effort of changing out my SSIM. I'm always so split between not wasting time on minimal gains, or trying to squeeze every horsepower out. I'm more leaning towards the latter. I mean to me, those curves look like something I would expect from getting on a different dyno or even the same dyno on a different day. I guess I just dont trust numbers lolz.
#14
i also wonder if there is any synergism going on with the IM and his headers..vs the 3 IM scenarios and stock manifolds..even though most ppl in here have them...
also to add 2 this thread a few days ago i bought aarons block off plate that ill be installing when it comes in, and ill report butt dyno results lol,.. but i dont have a way to tune a/f yet so idk
also to add 2 this thread a few days ago i bought aarons block off plate that ill be installing when it comes in, and ill report butt dyno results lol,.. but i dont have a way to tune a/f yet so idk
#15
true. makes sense. But dont the curves seem fairly similar to you? Maybe I'm not nit-picky enough for this and I do see the loss of torque at the low end at its worst point its about 25 horsepower lower than the best curve at that point, but for no more than a thousand rpm. I donno..
#16
I know, I'm preaching to the choir here, but sometimes the incorrect conclusions that most others (not you two) draw from good information really irk me.
Modified CVTC maps anyone? Maybe one day when I have time and money again.
#17
Well, being the cynic that I am, I think people will have tendency to see that comparison and think that the SSIM isn't worth it, but it really depends on your set-up and how you use it. The SSIM (or any similar IM mod) isn't a magic slap-on-for-25-whp mod. That's what SR20DEN was trying to tell people for years when they thought the SSIM was THE mod that helped him hit 12s.
I know, I'm preaching to the choir here, but sometimes the incorrect conclusions that most others (not you two) draw from good information really irk me.
Modified CVTC maps anyone? Maybe one day when I have time and money again.
I know, I'm preaching to the choir here, but sometimes the incorrect conclusions that most others (not you two) draw from good information really irk me.
Modified CVTC maps anyone? Maybe one day when I have time and money again.
Im starting to think that where i am and what i use for tuning(nothing) would work better w/ just VIAS plate..
#18
I think you need a tune more than anything, here are the gains I posted before and after a TUNE. It really helped my midrange the most and gave me some good peak HP/TQ gains. All the mods at the time are listed currently in my sig, similar to what you currently have.
#19
well for all u fast six speed guys the ssim might e good with a tune.. but wat about auto people? im deff gonna do the block off plate but would the ssim really be worth it for an untuned auto guy who plans on being tuned in the future... (technally i was tuned but i think i fuked my tune up playin wit the vafc2)lol
#20
Very interesting results. But it really comfirms what folks have been saying on here. You have to optimize your own setup. When I first had SSIM done my lowend was just as sucky as people said it would be and the topend was just as great as people said. Now 5 intake setups later lol, my lowend and topend are great and its time to move to other modifications.
#21
The piping is 3"ID and that is the stock MAF housing. This is the best setup I've had. Every other set up I've had has thrown a CEL even the GAB. I had the idea for a while, because I think our MAFs are very sensitive to turbulance. So I knew I wanted a decently long straight lenght running to the housing. But I didn't want to use a larger housingand have everything tuned yet. Anyway this setup for me atleast is leaps and bounds better then the short ram setup I had. The throttle response and lowend torque is so much better. The stock coupler will be replace is a smooth silicon coupler eventually.
Oh as a side note I see that Injen has a new CAI for the G35-Z made the same way now. Larger piping with the stock sized maf housing intergrated.
Oh as a side note I see that Injen has a new CAI for the G35-Z made the same way now. Larger piping with the stock sized maf housing intergrated.
#23
#24
This week I did a test run for a couple days with the valve disconnected and was disappointed at the results. Granted I didnt take it all the way out. But my power dropped off at about 3k and picked up again around 5.5k. Well that doesnt work for me because I dont like redlining my motor. I usually let off the gas right when it would start to pick up again. So I reconnected it and wham, felt like it added 15 hp back to the power.
Just my experience.
Just my experience.
#27
indeed
I think it's time for lol. No offense to anyone but this information has been readily available for yrs now.
Bottom line is, one setup isn't "the best". It all depends on how YOU drive your car, and even still, to get the most out of whichever setup you choose, you MUST tune.
I think it's time for lol. No offense to anyone but this information has been readily available for yrs now.
Bottom line is, one setup isn't "the best". It all depends on how YOU drive your car, and even still, to get the most out of whichever setup you choose, you MUST tune.
#29
indeed
I think it's time for lol. No offense to anyone but this information has been readily available for yrs now.
Bottom line is, one setup isn't "the best". It all depends on how YOU drive your car, and even still, to get the most out of whichever setup you choose, you MUST tune.
I think it's time for lol. No offense to anyone but this information has been readily available for yrs now.
Bottom line is, one setup isn't "the best". It all depends on how YOU drive your car, and even still, to get the most out of whichever setup you choose, you MUST tune.
wait...I thought you could just, like, you know, put mods on your car, and like, gain a lot of power without tuning your car
reminds me of a guy at nissanclub who thought you could plug in a safc and see results
#30
Wow, I never knew the block plate had THAT much potential. Sure am glad it was my first mod. Looks like any manifold work I'll be doing will be later down the road WITH a tune, but these results reassure me that stock IM/block plate set up will suffice quite nicely for the time being.
Excellent thread, 5 stars.
Excellent thread, 5 stars.
#31
Im still surprised at the amount of guys in here that overlook the importance of tuning. Most use money as the excuse, when an AFC can be had for under $150... yet they do their 3.5 swaps with $800+ Cattman headers or $600 cams wondering why their setups don't seem to be working as good as it should. I had an SAFC-1 back when I just had the 3.0 with just a short ram intake and a y-pipe!
#32
Don't be hatin
#33
I hope that is not a condescending statement towards nissanclub, seeing how I own an altima and use that site for most of my info...I will say though that I like to come on here and steal your guys ideas and mods. This site has a lot more technical info than nissanclub
Don't be hatin
Don't be hatin
#36
This is pretty interesting stuff. I was changing my spark plugs and looking for the gap measurement and info about taking off the IM and I came across this. I won't be able to tune my car for another month or month and a half, but I have the sh** I would need to gut the IM, so I think I'm gonna do that as well as delete the vias since I already have it off for the spark plugs. Kill two birds with one stone while I'm off from work. The amount of info on this site is F'n awesome.
#37
This is pretty interesting stuff. I was changing my spark plugs and looking for the gap measurement and info about taking off the IM and I came across this. I won't be able to tune my car for another month or month and a half, but I have the sh** I would need to gut the IM, so I think I'm gonna do that as well as delete the vias since I already have it off for the spark plugs. Kill two birds with one stone while I'm off from work. The amount of info on this site is F'n awesome.
If you can afford it might as well get the NWP spacers while you have the manifold off.
#38
^^ I actually looked into that, unfortunately at this moment, I can't afford to spend 200 bucks on items that aren't completely necessary. That will have to be done mid February right before I get a tune. I wish I could get the spacers while I have it off, but I'm out of work till Feb 1st so I'm on a budget.
#39
How many of you who've done the VIAS block-off plate have automatics? Seems like most who've done this mod have 6 speeds. With 2 less gears to accelerate through, it stands to reason the drop off in power between 2800-3800 rpm would be more noticable.
Would it be better in my case to wait until I do the intake spacer to do the VIAS mod? Or are the gains from 3800 rpm up more than enough to make up for the midrange loss?
Would it be better in my case to wait until I do the intake spacer to do the VIAS mod? Or are the gains from 3800 rpm up more than enough to make up for the midrange loss?
#40
How many of you who've done the VIAS block-off plate have automatics? Seems like most who've done this mod have 6 speeds. With 2 less gears to accelerate through, it stands to reason the drop off in power between 2800-3800 rpm would be more noticable.
Would it be better in my case to wait until I do the intake spacer to do the VIAS mod? Or are the gains from 3800 rpm up more than enough to make up for the midrange loss?
Would it be better in my case to wait until I do the intake spacer to do the VIAS mod? Or are the gains from 3800 rpm up more than enough to make up for the midrange loss?