15-14-17 i believe...

 

I added your dyno to my dyno page at

http://www.catenet.net/dyno.php

Regards,
Brian

 

You don't need a dyno to tune a car. I was making a lot of power, but I was also running on the rich side once I put 1300cc injectors in. The only thing I used to tune was a wideband and then I followed up with quarter mile times. The stockers really started to fall way out of their efficiency range after 17.5 pounds in hot weather and 18.7lbs in cold weather.

Along with my fear of dynos I also refuse to put slicks on my car because I don't want to beat the **** out of it , so my actual 1/4 mile times were never really great. If I wanted to know my rwhp all I had to do was figure it out mathematically using my cars actual weight with me in it and my quarter mile mph. If I wanted to know what my car would run in the quarter with slicks I could figure it out mathematically also, and thats a lot easier on the drivetrain. Fairly simple real world numbers....but what do I know I've only been doing this for 19 years...


John

 

Am I reading this wrong? At 2,500rpm, Jason is making about 70rwhp, and Stephen is making around 100rwhp at the same rpm. Then by 3,000rpms its alot closer, but Stephen is still ahead just by a bit. It just seems that SPO is a little stronger down low. Is this right?

I'm not bashing anyone, just looking at the two dyno sheets.

CJ

 

What were the A/F ratios for the best run Jason? hopefully XS did make you sign a waiver of confidentiality so know one would know. On a satirical note, drop the PFC, get the PFS PMC and sign the waiver and Peter tune it, 400 rwhp at 5.5 psi for sure

joking...of course

Tim

 

CJ did you look on Wargasm's site? You can do the comparo there.

 

Bad idea because when you raise the boost you won't make any more power

 

After looking at Stephens dyno again makes me think I should have sent my turbos back to Bryan to do the Stage 3s and run them non-seq - I've never seen a powerband that sweet, and the power down low is amazing for non-seq. But I'm having a lot of fun running seq. and carving up the mountain roads. Jason's numbers are very good although the sweet spot may be higher than 17 psi with the M2 set. I know I was hoping to see 400 rwhp sequentially but Jason's not done yet.

I'm still thinking of dynoing tomorrow at 17 psi and go for 400 - I'm only about 20 hp away - I don't think I've ever seen 400 rwhp from sequential twins....

 

The wargasm site is just kinda a rough guess. If you compare spo's real dyno sheet and spo's dyno sheet onthe wargasm site, they are pretty different down low. Check yourself. Not to mention, if you look at my FD dyno, it looks like it makes peak power at 5k rpms! Now, I'm not ripping the wargasm site....I've check it out alot, and used it alot when deciding which direction I'm going to take when the time comes for a upgraded turbo system. Not to mention, its cooler than hell. CJ

 

Im not sure what my afr's are as the car is at xs. I will know as soon as i get the car back and datalog both the timing numbers and the fuel. Im going to double check everything and then hit an east coast tuner after some research on my end.

GO FOR IT BARRY! HIT 403 uncorrected and sequential!

hehehehe


spo has a great car...one of my top three favorites on the whole site.


jason

 

>>I don't think I've ever seen 400 rwhp from sequential twins....<<<

From non-seq system........

402rwh with 356rwt...followed by another one with 397.5 rwh and 363.5 rwt !!!!

stock motor and twins @ 17.5osi on pump gas.

Over a year of abuse and still pushing the twins a bit more...

later

 

Look closely at the scales on spo's original sheet.

 

correct me if i am wrong, but tourque is what determines how QUICK (pulling power) you get to your PEAK horse power. i dunno, maybe i'm mis-understanding this comment... if this is true then i need to focus more on my horsepower instead of tourque.

example;

300 hp w/ 275lbs of tourque vs 300 hp w/ 210lbs of tourque.... who do you think will get to the finish line first?

n e wayz...

see ya,

car 53

 

what was the conversion factor that was used on those dyno numbers to get them? 1.1?

the conditions must have been amazing. please post the charts.

j

 

oops...i was sleepy last night... i meant GO FOR IT BARRY...HIT 403 CORRECTED and SEQUENTIAL...hahahha

 

why do the sheets compare differently on wargasms site?


j

 

Here's the dyno sheet from Boostn7's car:

https://www.rx7club.com/forum/attach...postid=1437589

 

boostns sheet...i wonder what figures that dyno used for the correction on those sheets.

there are areas of the powerband where he is beating the bnr set....definitely not down low...the boostn numbers are great for the track...and if they are accurate than they are a testament to good tuning and a nice port job...streetability wise they dont look too responsive...below 4k it looks like both the m2 set and the bnr set are putting down double the power.

I wish i knew excel...id put a nice comparison together...with some graphs for torque and hp for all three sets thus far.

bueller?





j

 

stock unmodified twins
racing beat street port template

Chuck Huang

 

It's interesting to look at 3K for the sequential systems vs non seq.

Rotaryextreme and artguy both make about 125 HP and 200 ft/lbs at 3K

pp13bnos - who has some more top-end, makes 95 HP and 160 ft/lbs at 3K

take 30 hp off the bottom end (almost 30%) and add it to the top end (10%).

But then I like sequential, so of couse I would notice that.

 

Artguy .....what's with the hate !!!!

My numbers are CORRECT and ACTUAL ...no correction used.
Not too responsive and only making half the power !!!!!WTF !!! what #'s are you looking at????

I just compared three dyno curves on Wargasm's page....Yours(Artguy), Steph's(SPOautos) and mine .....guess what ???? @ 4krpm I make more hp then both....only Steph @ 6+krpm edges me out.
Look at the torque....did any of you make 356 or 363.5 RWT ?????
Do you realize I'm on a stock motor ??? or at least I was

Well.....if you doubt the hp numbers then do the math...122mph in a 2940 lb car.
Want the video??

I will be on a dyno again soon with the twins and street-ported motor......so here comes more hate.

 

Boostn7 - I commend you for your tuning skills - not everyone can pull that much hp out of stock twins and motor - definitely all in the tuning. I think at 17-18 psi on the stock motor and twins most people would pull down 360-370 at the most. Congrats

KDR didn't get their dyno totally fixed yet although they did find the software glitch and should be fixed later this week...so I didn't dyno tune for 17 like I wanted - he did adjust my prespool and wastegate duty cycles so my secondary really comes on hard now.

 

Thanks Kwikrx7........tuning is one reason....explains why so many pulls on the dyno !

Motor is now ported so we'll see how much more it puts down...

 

nice

 

Amazing numbers!