350z4steve.... Knowing that now I would like to see another run with that set up 500 miles from now....

 

After the so.cal dyno run, I know what I want for Christmas now.

 

Whats that?

 

It seems the Crawford plenum didn't do much for you. And, our numbers are very close. So, I guess I could compare my set up to Crawford's set up too:

The Crawford Package

256.7 hp / 243.0 tq

"[P]lenum, cats, strut bar and headers. The price has been set at $2350. $2150 without the strut bar. Headers alone are $1300." - Doug

This set up also used the Borla TD exhaust which is not included in the Crawford Package or its pricing. Add $630 for this modification and we have a grand total of $2,980. And, was there an intake that's also not included in the package or Crawford's pricing? We don't know.

The JWT/LBMS Package

255.3 hp / 243.2 tq

"JWT Popcharger, LBMS testpipes w/resonator, Borla TD exhaust. The cost was $1,220. You don't have to lose handling by removing your strut brace. And you can get more power by adding some headers." - Dan

Conclusion

$2,980 vs $1,220 for the same horsepower and torque. For those of you that want to spend less than half the price, and have room to add more hp/tq with headers, go JWT/LBMS!

 

A big problem with this blanket statement is that you do not comment on the entire RPM range performance and are only talking peak numbers. What if your peak numbers for the JWT/LBMS package was only at 6500 rpms and the Crawford package maintained their numbers from 3000 - 6500 RPMS. HUGE difference. I do know that your DYNOs are posted as well as Crawfords. BTW in your DYNO post about the test pipes your HP was only 250.4 and TQ 230.9, maybe you have a DYNO you haven't posted. From the comparison of the Dynos the Crawford Dyno is much more impressive to me and what I would want from my car. For example at 3500 RPMs your dyno says about 145 HP and 220 TQ, but the Crawford says 158 HP and 238 TQ. To me that means I can pull on someone out of a turn or get to higher RPMs where the peak numbers are much faster.

 

Hey, great point! Except for one thing.

My dyno says 155 hp and 250 tq at 3,500 rpm when compared to Crawford's 158 hp and 238 tq at 3,500 rpm. Care to try another spot in the powerband?

 

Which DYNO is that and where is it posted? I took the one from your LBMS test pipes with Resonators post.

 

hehe...owned.....

hey dan, sorry bout the price on the dyno, i take the responsibility and i will reimburse the difference to all who competed. hope to see you next time, maybe with some new wheels

 

Owned?? By what? I compared the DYNOs that are posted and visible for all to see. Right now there is not a Dyno posted with those numbers that I could find. I see that there is a thread about the SoCal dyno days with some numbers but no DYNO and this must be a different DYNO than what was used for the other thread unless there were more mods done from one to the other, which means that the DYNO variance may be playing a factor. Just as Doug mentioned, he could have taken the car to a DYNO that he knows will give better numbers but he didn't.

 

Hell's Ron's Mr Twisted read 150 HP at 3500 rpm with 229 tq in a Auto 5AT with Cai and Stillen exhaust only. Torque almost completely flat from 3000 to 4900 RPM 220-229 Tq. Id get you guys for the first 60 ft.

ZZZYA wrong all the Dyno's were run at the same time at the same place and in the same conditions You read someone elses dyno. Not HFMS or 350Z 4 steve. Neither has been posted yet.....

 

Show the DYNOs.

 

You guys are TOTALLY missing the point of the Crawford Plenum.

My car dyno'd a max power of 243rwhp bone stock @ 6200rpms

@6500rpms my car was making 225rwhp. That's a drop of almost 25rwhp in 300rpms.

The Crawford Plenum allows the Z to HOLD power to redline...making right around peak numbers from 5500 to 6500rpms instead of 5500-6200rpms.

That being said a stock Plenum car with 243rwhp peak will be SLOWER than a Crawford Plenum car with the same peak numbers because the crawford plenum car has MORE area under the curve.

 

gosh, u cant just wait a lil mr impatient

hehe j/k

im sure hfm will post it

 

That is exactly the point I am trying to make with not only the Plenum but Crawford's entire package of Plenum, Headers and HF Cats. The numbers are not simply "peak" numbers or gains, but making increases in HP and TQ across a much wider RPM range and maintaining it. I have seen many DYNOs where test pipes are losing TQ and HP in the lower RPM range, but making peak numbers look good. The same can be said about some of the headers out there. The only Crawford product that really costs some $$$ are the headers and they are worth it when you compare them to the NISMO or Veilside headers for the same price or more.

 

ZZZya The two dyno charts posted belong to Konverter,(first one posted) a stock w/nismo exhaust and( the second) was from daytona 350 Z a STOCK DB touring with nothing but a smile on it.

All our cars could of done better with a little tuning but this is the real world and the first Dyno . Guys the results are pretty bulletproof as far as how they were done.

You'll have to ask nicely if you want to see the HFM cards. Its either call , raise or fold, is the way I see it.

HFM show the charts if you like ,but they have to ask nicely.. You too Steve......

 

I personally think that if HFM wants to continue his rant about Crawford vs JWT/LBMS then he needs to post the proof. I have no issue if the DYNO is posted for all of us to compare and analyze, heck it might even convince me to rethink my next couple of mods, but until then I will continue to support the awesome torque gains the Crawford package is putting down.

 

Notice when the guys post their charts that both popchargers were running very lean,,,HFM accually had a blockage in his fuel sensor I believe???? And steves plenum hadn't had time to work in yet. and I know my wheels were way to heavy to Dyno with. All of those things will be addressed by So Cal Dyno 2" revenge of the unresolved"

The opinions of the owner are there's Your free to spend your money where ever you like!!! Here in the west we have a lot more things to do with our time and money.

 

Experience has though me to measure performance improvements in a car more ways than just one way. That is why my brother and I either go to the track or race each other. The last time we raced, he pulled a car length to me in fifth gear and that was about it. His advantage were the Borla headers, all the mods where the same except that I have Injen SES and he has Borla TD. As soon as he installed the Crawford plenum, not only he was pulling hard in fourth gear, half a car length, he kept pulling away in fifth to almost two or more car lengths when we let off, almost at 145mph, if we kept on going he would pull more distance. What I’m saying is that the plenum GIVES power, the gains are too subjective to each car. You just cant compare two different cars for measuring hp gains. That is simply erroneous from the beginning. Also, I don’t know how people cant gain anything of the CAI. The CAI in my car and many others for that matter, gave us almost 1mph in the trap speed (1/4 mile) and in a street race, it gave me almost two car lengths to a stock car I raced.

 

What, now we are resorting to putting people down by what area of the U.S. they are from?? I refuse to go there and you should be ashamed of yourself for that remark.

 

Does anyone know if the Crawford plenum will fit with the ATI procharger?