Dyno numbers with Cattman Headers!!!!!
Thread Starter
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Joined: Mar 2002
Posts: 1,153
From: SouthSide Jamaica Queens
Originally Posted by ighettoboyi
sorry this is addressing the previous page, but are our autos really killing 23%? i thought it was more like 18% and our bhp figures are just a little inflated (while the tq numbers are a bit low)........no? 23% is quite a loss.....
Originally Posted by ighettoboyi
sorry this is addressing the previous page, but are our autos really killing 23%? i thought it was more like 18% and our bhp figures are just a little inflated (while the tq numbers are a bit low)........no? 23% is quite a loss.....
La cocaína es barata en Miami.
.
Originally Posted by ighettoboyi
sorry this is addressing the previous page, but are our autos really killing 23%? i thought it was more like 18% and our bhp figures are just a little inflated (while the tq numbers are a bit low)........no? 23% is quite a loss.....
This is what I was told by a nissan powertrain engineer
Thread Starter
Senior Member
iTrader: (12)
Joined: Mar 2002
Posts: 1,153
From: SouthSide Jamaica Queens
Originally Posted by chris'smax
Ghase, congrats on the #'s. Skewed or not if you broke 215 whp that is very respectable. what mods do you have?(sorry if i didn't see it in the post)
I still love my little 3.0
I still love my little 3.0
Originally Posted by 98SEBlackMax
That dude in Dallas had extensive engine work done on his VQ30... He dynoed 238~240 WHP with a built up 3.0. Before I met the guy several other of the Dallas guys were mentioning his car and saw the dynos, so im pretty sure he wasn't BSing.
To the best of my knowledge he had MEVI, stillen equal length Y pipe, 260 duration JWT cams, heavy duty valvetrain, aggresive JWT ECU tune, 8.9:1 compression with aftermarket pistons, crank, and rods... Basically everything you can do with a motor he had done. He's installing a turbo soon, but did a engine build up for it and put down that kind of power N/A. He doesn't post on the org cause he doesn't want to be bothered by anyone, he posts once in a while on DNE's website.
With that kind of build its possible, but im willing to bet the power under the curve was crap.
To the best of my knowledge he had MEVI, stillen equal length Y pipe, 260 duration JWT cams, heavy duty valvetrain, aggresive JWT ECU tune, 8.9:1 compression with aftermarket pistons, crank, and rods... Basically everything you can do with a motor he had done. He's installing a turbo soon, but did a engine build up for it and put down that kind of power N/A. He doesn't post on the org cause he doesn't want to be bothered by anyone, he posts once in a while on DNE's website.
With that kind of build its possible, but im willing to bet the power under the curve was crap.
Anyone have anything to say about this?
Hopefully oneday the 30comes back to surprise all 35's
--I can always dream.
Originally Posted by SR20DEN
You mean the VQ30s should be making 300fwhp and the VQ35s should be making 350fwhp?
One day.
One day.
Originally Posted by 98SEBlackMax
But if the TQ is crap why bother? Unless there is a decent TQ curve its prob not worth it for us. Were not driving lightweight Hondas here... We would have to do some serious weight reduction to take advantage of peak HP like that.
If BMW can do it, why can't we?
Originally Posted by SR20DEN
Don't be shortsighted and pessimistic.
If BMW can do it, why can't we?
If BMW can do it, why can't we?
E46 M3s are rated at 333 HP but still have a decent 262 TQ figure.
If I could make 333 HP with 262 TQ with a VQ I would be happy and probally broke afterwards.
Edit: What do E46 M3s put down for WHP and WTQ ?
Originally Posted by 98SEBlackMax
If I could make 333 HP with 262 TQ with a VQ I would be happy and probally broke afterwards.
Originally Posted by JClaw
At the crank? I believe an N/A 350z had done it (295whp) with higher torque figures.
Also I don't go by crank figures, good dyno readings only.
Originally Posted by 98SEBlackMax
If I could make 333 HP with 262 TQ with a VQ I would be happy and probally broke afterwards.
Edit: What do E46 M3s put down for WHP and WTQ ?
E46 M3 at the wheels:
Originally Posted by SR20DEN
At the crank I have more torque than that and almost as much power.
I wonder what the E36 M3 does for WHP and WTQ stock. I think I may have matched its numbers with my current setup, this was one of the goals I had.
Originally Posted by SR20DEN
About 217whp
and yes I will have a VQ35 swap someday, im just taking the cheaper DEK route for now.
The E46 M3 makes about 290ft-lb (peak) at the crank...
E36m3s you should be careful of...espescially if you have a VQ30DE/de-k. With a modded 35 they should be toast (that is unless they have the OBD-1 euro conversion good for 321 crank hp).
E36m3s you should be careful of...espescially if you have a VQ30DE/de-k. With a modded 35 they should be toast (that is unless they have the OBD-1 euro conversion good for 321 crank hp).
Originally Posted by 98SEBlackMax
Damn, well I still got 16 WHP more to go. Maybe with a newer DEK motor and more SMT tuning I might get there, also an extended rev limiter would help.
and yes I will have a VQ35 swap someday, im just taking the cheaper DEK route for now.
and yes I will have a VQ35 swap someday, im just taking the cheaper DEK route for now.
Originally Posted by JClaw
Why is the De-K route cheaper? The VQ35 swap can be done for 1000$ if you do the work yourself and don't do other mods (like clutch and headers) at the same time.
Besides I intend to go the VQ35 route eventially...
Originally Posted by JClaw
Why is the De-K route cheaper? The VQ35 swap can be done for 1000$ if you do the work yourself and don't do other mods (like clutch and headers) at the same time.
Stop hating.
There have been others....
Here is a 2001 5spd with an absurd correction factor(Honduuh ricer shop inflates numbers by modifying altitude), light weight yet 19" Centerline rims, Cattman headers, JWT POP, high flow cat, Frankencar high flow Bpipe, and no axle back section, here are his numbers with NO tuning:
Your numbers are way off. As others have said, we don't think you're lying, we just know how different dynos can inflate numbers and bad dyno operators(like above) can screw with accurate apples-to-apples comparisons.
Make sure you use 3rd gear and a DynoJet.
Here is a 2001 5spd with an absurd correction factor(Honduuh ricer shop inflates numbers by modifying altitude), light weight yet 19" Centerline rims, Cattman headers, JWT POP, high flow cat, Frankencar high flow Bpipe, and no axle back section, here are his numbers with NO tuning:
Your numbers are way off. As others have said, we don't think you're lying, we just know how different dynos can inflate numbers and bad dyno operators(like above) can screw with accurate apples-to-apples comparisons.
Make sure you use 3rd gear and a DynoJet.
Originally Posted by Ghase
Sr20DEN, you have have my word. I just wanted everyone to know my so-call good new. Especially being the first to ever try to dyno a VQ30 with headers, I was just trying to share with mee fellow brothers on the org weather the dyno was wrong or right..... 
Sorry for
so much.
Sorry for
so much.
Originally Posted by BlackBIRDVQ
If a stock GXE 5spd can bust out 194-199WHP, there is one guy here on the .org who posted a dyno chart of his GXE that did 199WHP stock- WHAT do you think a Max with a Ypipe will put out ? over 200WHP. Since we have a buncha ricers on this forum who love their 50lbs wheels, we never see numbers like that. Where do you get this "hard to pass 200WHP barrier on 3.0L" philosphy ? How many FULL bolt on DE-Ks do you see on these forums ? How many of them have custom "secret sauce BIGGGG HP intake manifolds" ?
All you 3.0L haters, E55AMG2 especially need to chill the %#^& out- your AUTO 3.5L would get dropped like its hot by my slow underpowered, only 3.0Ls of displacement GXE. Lets not forget what powers the fastest Maximas on this forum. VQ30DE.
All you 3.0L haters, E55AMG2 especially need to chill the %#^& out- your AUTO 3.5L would get dropped like its hot by my slow underpowered, only 3.0Ls of displacement GXE. Lets not forget what powers the fastest Maximas on this forum. VQ30DE.
Let's also remember that fast in a straight line is only fast in a straight line. You gays can argue about whp all day long, and how (yes, I will concede this!) the VQ35 has more power than even a heavily modded VQ30....but I still haven't been beaten by a 3.5 in autocross, so I don't really care
here's my Cattman header dyno from last year
I must say that I seriously doubt Ghase's #'s are accurate for a VQ30. 233whp with only headers and not much else? And on an auto? On a VQ30, headers won't get you more than about 20hp. We'll see once you get a real run in on a DynoJet. But I've never seen higher than 207-209whp on a 3.0 and even those were full bolt-ons: MEVI, ECU, i/y/e, light wheels, udp etc.
Now, there's no way to know who had the *first* header dyno and it doesn't matter much anyways, but I dynoed my 3.0 last year after I put my Cattman headers on. I posted it over at maximaracing.org which seems to have gone belly up. Guess I should have posted it here.
The dyno I did was strictly headers vs. stock (except for a muffler which is negligible). The picture is below at the bottom but the numbers (taken from the data table, not the graph) basically break down like this:
Max gain (HP/TQ): 20/20.1
Gain at peak (HP/TQ): 19.4/16.0
Avg. gain from 2000 to 4000 rpm (HP/TQ): 3.9/6.6
Avg. gain from 3000 to 6000 rpm (HP/TQ): 12.0/13.3
Avg. gain from 3500 to 6000 rpm (HP/TQ): 13.4/14.3
Avg. gain from 4000 to 6000 rpm (HP/TQ): 15.3/15.9
Avg. gain from 4500 to 6000 rpm (HP/TQ): 17.1/17.1
Run file is here
I now have the 00VI with JWT ECU, UDP, and full intake and exhaust including headers. Which should make me at least equal to a DE-K at worst. I will be dynoing in the next week or two as I have not done so since installing the 00VI several weeks ago. I'll post results, but I'm not expecting to see more than 210 peak, so again, I can't believe Ghase's #'s are accurate. Let's see a DynoJet run and then we'll talk.
Now, there's no way to know who had the *first* header dyno and it doesn't matter much anyways, but I dynoed my 3.0 last year after I put my Cattman headers on. I posted it over at maximaracing.org which seems to have gone belly up. Guess I should have posted it here.
The dyno I did was strictly headers vs. stock (except for a muffler which is negligible). The picture is below at the bottom but the numbers (taken from the data table, not the graph) basically break down like this:
Max gain (HP/TQ): 20/20.1
Gain at peak (HP/TQ): 19.4/16.0
Avg. gain from 2000 to 4000 rpm (HP/TQ): 3.9/6.6
Avg. gain from 3000 to 6000 rpm (HP/TQ): 12.0/13.3
Avg. gain from 3500 to 6000 rpm (HP/TQ): 13.4/14.3
Avg. gain from 4000 to 6000 rpm (HP/TQ): 15.3/15.9
Avg. gain from 4500 to 6000 rpm (HP/TQ): 17.1/17.1
Run file is here
I now have the 00VI with JWT ECU, UDP, and full intake and exhaust including headers. Which should make me at least equal to a DE-K at worst. I will be dynoing in the next week or two as I have not done so since installing the 00VI several weeks ago. I'll post results, but I'm not expecting to see more than 210 peak, so again, I can't believe Ghase's #'s are accurate. Let's see a DynoJet run and then we'll talk.