Well, they call it a velocity stack, basically a plastic composite version of the JWT pop charger stack but 3.5 inlet, and 6" od for a really big filter.

Thanks for posting all this info nmexmax, it's a lot of great information and dispels a few myths too.

 

oops, i keep saying velocity stack, and nmex is right, it's called a flow stack

 

is wrong with me? How come I never compared my 2 best runs? Am I that much of an idiot? I need to go home and compare, since I have not been able to find it on here, my 2 best runs.

Details to come. Again this is the whole SSIM CF.

 

Nice always liked your dyno threads. I know that I should hit a dyno to test the 2.5" vs 3" Y-pipe and vias delete stock VS SSIM... Just need a SSIM to test with haha.

I did get the UTEC and such installed after all! I had a good laugh reading my posts in this thread, lol

 

Here's the comparison of my best functioning VI an SSIM.



But, we must not forget, the 233 is with an intake and headers, that's it. Whereas the other is with ... ahhh a lot more.

 

So the extra 8 HP was with what? SSIM, Land Rover MAF, etc?

 

Come on man, look at the area under the curve! Peak numbers are ftl ..

Ahh, TS/SSIM/different intake/LRMAF/LW wheels/test pipe/cattman B-pipe some SAFCII fidgeting.

 

Yeah looks like gains would have been nearly 30hp if the 233 run were taken out to the stock rev limiter. 20hp at 6500 isn't too bad either!

Between JayPee's SSIM times, and your dyno, I am considering revisiting the SSIM... I believe I have all the supporting mods you could possibly want, at this point.

 

you're a funny guy, that all i can say.... funny guy

 

Why, because I still don't have a SSIM?

 

Yeah SSIM is FTW. Still need mine done.

 

You mean 20HP.

 

naw because everytime i said something about the SSIM you was one of the few that comes and bash it because of theory... all cool though

 

Because of theory, huh?

Let's not forget that I had a SSIM on my car for over a year.... Theory my ***.

 

Tuned+supporting mods SSIM vs untuned non supporting mods SSIM



WQT




WHP

 

Wow. That is some serious area under the curve gains.

 

Good for all the nay sayers re: SSIM loses you torque Not if you know you're doing


I am planning on dynoing a week from the 18th. Should be semi interesting, I hope to at least match my old numbers. The new dyno will show the gains from the 3" exhaust + fastcat (last time was catless + cattman B pipe) and NWP spacers and a sort of new intake.

Last time was a filter strapped to the TB w/LRMAF, this time will be stock Helmholtz, 3" ID MAF + JWT POP. Let's see.

 

Will be waiting for that one Damn that is alot of dynos you have take so far, can't wait to get some headers and lighter wheels to see what's up...

 

My water heater busted, and I'll be out of town starting tomorrow until Saturday (late) on vaca. So I will hopefully get my water heater installed Sunday or Monday, but it if happens Monday, I obviously wont be dynoing Monday, more like Friday ... either way, it's within the mile ..

 

any update, been following your results to help guide me with my car, what kind of headers do you have? do you know if that lrmaf can be used in a 4th gen?

 

I don't think the LR MAF can easily be used on 4th gens because our MAFs do not have the removable sensor like 5th gens and newer do. I believe our easiest option for using a larger MAF is using a N62 MAF from a Z32 or a J30.

 

Or you could take a peice of pipe and make your own.

 

That

 

write-up?

 

Cut and paste?

There was a guy here selling a custom 3" maf.. I'll see if I can find it.

Edit: Found it.
http://forums.maxima.org/4th-generat...h-maf-etc.html
And maybe something you will want to do to the maf while its out.
http://forums.maxima.org/4th-generat...af-sensor.html

 

I suppose I can add a little more to this thread. I haven’t dyno’d in years, but this is good info. Put a few theories to rest if anything.


These are the results of at least 4 runs (best of) with the listed respective mods.

Purple: Cheap autozone filter connected to LRMAF (3.25”) connected directly to the TB, NWP spacers/Cattman Gen I headers/no cat/Cattman 2.5” B-pipe/Stock Muffler/TS F-Spec/SAFCII/+2ş BTDC/335cc Injectors, AFR's in the same general area, mid/low 13's.

Green: Addition of 3” Cattman exhaust, FastCat, and 3” MAF housing/JWT POP/Stock Helmholtz resonator.

Red: Addition of 2.5” test pipe, removal of Helmholtz resonator, replaced with a straight pipe (3”).

 

Interesting...was the FastCat a 3" diameter like the rest of the 3" Cattman catback?

Being that the 11hp hump was around 6100rpm, do you think it was more intake related and opening up a more consistent intake path?

 

Nice! Thanks for sharing. With any luck, now that I have a 4" Ti system with no resonator and a custom test pipe, I might just pick up some power on the dyno. 400hp...here I come.

 

The FC is 2.75" ID. The 3" TP is closer to 3, and the 2.5" TP is, well 2.5".







One thing to note in the graph is that the initial start of the dyno is lower in torque, by a lot, I blame that on the exhaust.

I've proven the Helmholtz theory on the first page of this thread. And it didn't add much at all, just changed the curve. Check the first page on that info.

Oh man Wizard .... yeah I know you'll do that.