Author Topic: Sequential->Non-sequential before and after dyno charts  (Read 2442 times)

Offline chrisJDM

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Sequential->Non-sequential before and after dyno charts
« Reply #15 on: October 20, 2007, 06:35:26 PM »
peterwolds - i think your best bet if you are sticking with the twins to get better drag racing times is to look at other things instead of changing the turbo setup, there are lots of things you can look at to improve straight line performance.

heres a few things to look at:
weight
wheels and tyres
suspension
differential
clutch and flywheel

lots of other things aswell, thats just the basics

Offline Carl

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Sequential->Non-sequential before and after dyno charts
« Reply #16 on: October 20, 2007, 06:37:06 PM »
We have quite alot of customers who are running non sequential and would not go back to sequential,but equally we have those who prefer the original Mazda setup,but out of all the conversions we have done only two have gone back to sequential.
Regards
Carl

Offline Carl

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Sequential->Non-sequential before and after dyno charts
« Reply #17 on: October 20, 2007, 06:38:45 PM »
Generally we have had quite alot of customers running in the 12\'s both ways,the important thing is good tuning to suit each setup and of course all components being in good order.
Regards
Carl

John Yorke

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Sequential->Non-sequential before and after dyno charts
« Reply #18 on: October 20, 2007, 07:20:58 PM »
Quote from: bnaellis
Was tuning a twin turbo fd yesterday running normal sequential setup, and I have come to the conclusion that I would not want a twin turbo fd to perform any other way. I love the feel of the 2nd turbo kicking. As for bends and an unpredicatble 2nd turbo, I think the driver is what is unpredictable, not really the turbo. The only time I have lost it in an fd is when I\'ve been driving like an idiot, of which I can\'t really blame the turbo. It\'s nice putting your foot down and feeling the turbo doing it\'s job knowing that at any given moment you got the 2nd one to kick in. People are different and like different things, but for me I cannot see why one would change the stock fd sequential setup, I think it\'s great.

Brian

Totaly agree Brian, my point about the 2nd turbo comes from other people complaining it catches them out, I much prefurred seq.

Offline robedwards99

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Sequential->Non-sequential before and after dyno charts
« Reply #19 on: October 20, 2007, 07:41:42 PM »
I think experience with the 2nd turbo kick soon teaches you where and when it\'s safe to plant the right foot.

I personally think the first turbo kick can be just as dangerous having got an unexpected sideways moment in third gear at fairly low speed on a damp roundabout!

I have briefly considered the non-sequential route but I\'m sure I would miss the constant power band through the revs.

I recently took an Impreza nut out in the FD. He\'d never been in one before and was amazed at the length of boost. He said he kept expecting me to change gear but I kept it planted for much longer than he is used to! AND I didn\'t even hit the beeper!

Gotta love it :D

RX7... The Deep Pocket Rocket...

Offline BlitzBoy

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Sequential->Non-sequential before and after dyno charts
« Reply #20 on: October 20, 2007, 10:53:54 PM »
I believe SDMINUS with the fastest drag time in UK on Sequential twins of 12.0, so it all depends what u prefer in power delivery
"Piston Killa" 3rd Gen\'94 \'Oldone Racing Full Bridge Ported REW 13b engine with SCR seals\'. HKS T51 KAI turbo BBM mapped Motec ECU

JDS/HKS Street Class Championship Runner up 2011
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http://pistonkilla.blogspot.com/
old spec HB T51 470 @ wheels @ 1.2 BAR, 555 @ fly 10.46 @ 130 @ 1.25 Bar
new spec FB T51 482 @ wheels @ 1.15 BAR, 570 @ fly

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Offline peterwolds

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Sequential->Non-sequential before and after dyno charts
« Reply #21 on: October 21, 2007, 07:57:20 AM »
Quote from: sweetiewells

heres a few things to look at:
weight
wheels and tyres
suspension
differential
clutch and flywheel

Cheers Sweetiewells
Been dieting this year lost half a stone so weight part on its way :rollin - only have a 1/4 tank of fuel in when running to keep weight down,next time will take spare wheel out as well.
got tein superstreets set softer now & dont get the loads of skipping at start
yes sure tyres want changing next got bridgestone so3\'s on
not sure about clutch,dif,flywheel changing as its currently very driveable in town
:Typing Pete

Offline Rixio

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Sequential->Non-sequential before and after dyno charts
« Reply #22 on: October 26, 2007, 02:39:11 PM »
Quote from: bnaellis
Was tuning a twin turbo fd yesterday running normal sequential setup, and I have come to the conclusion that I would not want a twin turbo fd to perform any other way. I love the feel of the 2nd turbo kicking. As for bends and an unpredicatble 2nd turbo, I think the driver is what is unpredictable, not really the turbo. The only time I have lost it in an fd is when I\'ve been driving like an idiot, of which I can\'t really blame the turbo. It\'s nice putting your foot down and feeling the turbo doing it\'s job knowing that at any given moment you got the 2nd one to kick in. People are different and like different things, but for me I cannot see why one would change the stock fd sequential setup, I think it\'s great.

Brian



My sentiments exatcly, its all down to the driver...the way i see it is...In principle its like driving a single turbo...i for one will not be going non seq simply because i cant see any benefits...specially after looking at those dyno printouts...

Rixio:cheers

Offline Rixio

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Sequential->Non-sequential before and after dyno charts
« Reply #23 on: October 26, 2007, 02:42:51 PM »
Quote from: BlitzBoy
I believe SDMINUS with the fastest drag time in UK on Sequential twins of 12.0, so it all depends what u prefer in power delivery


Was Scott running his twins in seq? I would have thought for the strip non seq would be favourable?

Offline arrouk

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Sequential->Non-sequential before and after dyno charts
« Reply #24 on: October 26, 2007, 04:20:04 PM »
on the strip it wouldnt matter as once you are moving you dont drop below 4.5k rpm and so both turbos are working any way.

the advantage rixio is there is soo much less to go wrong and if there is a problem there isnt 500 yards of vacume pipe to trace through to find it.

matt

Offline antnicuk

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Sequential->Non-sequential before and after dyno charts
« Reply #25 on: October 26, 2007, 06:42:14 PM »
Quote from: bnaellis
Was tuning a twin turbo fd yesterday running normal sequential setup, and I have come to the conclusion that I would not want a twin turbo fd to perform any other way. I love the feel of the 2nd turbo kicking. As for bends and an unpredicatble 2nd turbo, I think the driver is what is unpredictable, not really the turbo. The only time I have lost it in an fd is when I\'ve been driving like an idiot, of which I can\'t really blame the turbo. It\'s nice putting your foot down and feeling the turbo doing it\'s job knowing that at any given moment you got the 2nd one to kick in. People are different and like different things, but for me I cannot see why one would change the stock fd sequential setup, I think it\'s great.

Brian




I couldnt agree more,   I have high flow sequential twins with 300 bhp at the wheels at 0.9 bar and i love it.  I have had very large singles and medium singles and twins are definately best imho.  The GT35/40 was great also, i had 100 more hp at 4000 rpm than the T51 boys who were running nearly 500 rwhp and it was quicker.  Its all about delivery not the final figure on the graph.
400 BHP - 650 KG\'s = 616 BHP Per Ton of Rotary Power

That\'s the way to do it! :Thumbsup!


Offline Martiny

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Sequential->Non-sequential before and after dyno charts
« Reply #26 on: October 28, 2007, 07:25:50 AM »
Agree with Brian and Tony.

If you pass through 4.5k from below 3k, it probably means you were in the wrong gear for that corner anyway!

Offline arrouk

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Sequential->Non-sequential before and after dyno charts
« Reply #27 on: October 28, 2007, 10:18:04 AM »
Quote from: antnicuk
 Its all about delivery not the final figure on the graph.



couldnt agree more not just for twins but for all turbo\'s, it is something i keep telling people but i find it mostley falls on def ears.

matt

Offline Rixio

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Sequential->Non-sequential before and after dyno charts
« Reply #28 on: October 28, 2007, 11:01:05 AM »
Quote from: arrouk
couldnt agree more not just for twins but for all turbo\'s, it is something i keep telling people but i find it mostley falls on def ears.

matt



No...no...& no we are not going non seq:spank

Offline BlitzBoy

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Sequential->Non-sequential before and after dyno charts
« Reply #29 on: October 29, 2007, 10:10:09 AM »
Quote from: Rixio
Was Scott running his twins in seq? I would have thought for the strip non seq would be favourable?

yep he was running seq, as everyone says its about drivability in the end
"Piston Killa" 3rd Gen\'94 \'Oldone Racing Full Bridge Ported REW 13b engine with SCR seals\'. HKS T51 KAI turbo BBM mapped Motec ECU

JDS/HKS Street Class Championship Runner up 2011
Rotorstock winner 08,09
http://pistonkilla.blogspot.com/
old spec HB T51 470 @ wheels @ 1.2 BAR, 555 @ fly 10.46 @ 130 @ 1.25 Bar
new spec FB T51 482 @ wheels @ 1.15 BAR, 570 @ fly

New Project
"el fénix" RX2 by Mark & Mark