ColinD

Looking good there Rich, nice steady, good areas

Don't be to upset by Des's and others comments, there are to many variables at work to be sure without control cases, eg rollers ain't that scientific but a very handy guide when done fairly with other cars. Your *** tells you it's quick because it is...

Jason,

ohboy...not alone in that...best trick is to get two invoices done, then you can show one without hiding anything right

I feel like poping mine over to JBS later this month for a comparable test case as I don't expect anymore than 207/215 (/optimax)

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jason

3 bar mate,though at some point i will no doubt get the 4 bar fpr,think they will upgrade the software for gratis
not really been able to get a good evaluation ,as i was down in daventry(unfamiliar roads) in the dark.
the mrs is now out in our"stock" vrs,but rest assured i will be heading for my usual test track soon.
one thing though ,revo kev pulled up an intermittent dv fault so i must get this off and check it.its a forge but we weren't sure last night whether its a diaphram or piston type.
so far though ,bl00dy good bit of kit,new tyres please!!

ColinD

Whats the real world difference between 3bar and 4bar?

I only ask ask last time I met James there was umming and arhing on the 4bar for the Octy, unless I wasn't paying attention. I get the feeling 4bar is a prereq for bigger blowers, not sure of it's benefits on the present configuration.

Genuine question as I don't know.

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DaveH

Look nice them Rich, are you pleased?

SilveRS

I didn't realise cars were so inefficient. 50hp loss is quite a lot of power to loose through the transmission given it is fwd.

By the way, nice graphs. So a tweaked RS is putting out a real 180hp.

DaveH

Approximately 1bar! . Seriously though, Rich should be able to give you some info, he had 3bar for a week and is getting on for a week with 4bar. Apparently 4 bar is much more sensitive on the throttle, a small press and its off! Also, I believe 4 bar uses a fair bit more fuel than 3bar.

Neo_VR

about 33%?

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ColGod the UberMod


,___,
[O.o]
/)__)
-"--"- ORLY??

rich1068

Colin,

I'm not upset at all. Des never upsets me, he's a little angel! Actually I was very interested to hear what he had to say. You're right, rollers aren't very scientific when it comes to calculating numbers, far too many variables and allowances made (software recalculating this, software recalculating that). But you can compare. My butt dyno tells me that Revo has been an excellent choice so I'm happy with that. I also know (butt dyno again) that 4 bar feels better than 3. I'm sorry I can't be any more technical than that, I'm not an engineer, I just drive it. Actually I do more than that, I spend a very large chunk of my day sitting in my motor and I know how it drives inside out. Butt dyno again I'm afraid

Dave,

As you can probably guess I'm chuffed to bits. The curves are good and the numbers make me smile though as I keep saying I take these with a pinch of salt. 4 bar surprised me really, it is more sensitive on the throttle but not as much as I thought it would be. I had a nasty feeling it might be like flicking a switch, on/off. It's not, certainly a little more twitchy but not so that eg town driving, is a chore. With regard to fuel consumption, I really haven't noticed that much of a difference. But then most of the time I drive like somebody's granny

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Rich.

Skoda Octavia RS

james 2

HI

ok hope i can shead some light on this 3-4 bar issue,here we go the main reason the 4 bar regualtor is used, is that the ko3/s injectors will only flow a limited amount of fuel,there for only a certain amound of ing advance and boost can be used(safely)ie to match the max fuel flow.By using the 4 bar the actual fuel pressure is incresed,thus delivering just that little bit more fuel.This in turn means more boost and timing can be used,and as a result you get more power.its as simple as that!!!!!

hope this helps

james jbs

DaveH

Is it notably quicker than the 3bar though, that's what we all want to know?! I filled the tank with Optimax today and used the Optimax program for the first time. Now I'm wondering whether I should have gone for the SPS3 instead of the 2 for tinkering with the map. Back-dated pay rise this month, can you see where I'm headed with this?

james 2

ok hows this sound

come see 1 of the JBS staff and we will upgrade you to 4 bar(foc)
go away and drive your car,come see us a week later,if you like we will charge you for the regulator.And if not we will flash you back to 3 bar,all i ask is you write a post detailing your findings.????

faboka vrs

Now thats service

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John

2004 Skoda Fabia vRS - Xenons - Heated Seats - Cruise Control - Passenger Airbag Deactivation switch - Side Airbags

rich1068

You can't say fairer than that Dave

Optimax. I would imagine you'd need a few tanks to get the benefit.

Notably quicker? <deep inhalation of breath, pondering reply> It feels better. Really I should have kept the 3 bar longer to give a definitive reply, I thoroughly enjoyed it from day one but what kept coming back was that I could have got something better for a little more. In no way disappointed but..., if you know what I mean. I'm totally satisfied with how my car performs now (sorry James, no more helicopter lessons for you), the Revo 4 bar along with the various bits and bobs makes it drive just how I want it to. Nice and easy in traffic and extremely quick off the mark when the road opens up in front of you.

Go for it Dave

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Rich.

Skoda Octavia RS

jason

does that oinclude other members on 3 bar program?just checking ludlow to chesterfield

EddyH

Jason by the time you go back the second time you'd have spent the cost of the 4bar fpr in fuel. Unfortunately I can't give a comparison as I went straight for the 4bar program. However for the mimimal cost I'd say go for it. It'll give similar gains to the likes of an exhaust and give the potential for more power from future upgrades. In my opinion it seems rude not to for the price of the 4 bar fpr and the free reflash to 4bar software.

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EddyH

Audi A6 Avant 2.7 TDI
Audi A3 2.0 TDI Sport

jason

lol yeh......but you are talking to a man that "popped up to scotland to look at a car" a car which has done nealry 2k in the tme i have had me hands on it,i like to drive

DaveH

Indeed, you can’t say fairer than that can you. Thanks for the offer James but I think I’ll stick with the 3bar. Nothing has changed really since we discussed the various options the first time – not looking for every last ounce of performance from the map, just a nice upgrade that’s compatible with my clumsy right foot – and on that basis you recommended the 3bar to me. I’m more than happy with the upgrade in performance, its just Rich’s gone the whole hog and now I feel like a sissy!

I may well have to pop back for another chat r.e. the SPS units though, as I said at the time I plumped for the SPS2, I’m unlikely to ‘twiddle’ with the settings on a regular basis but for just a bit more money over the SPS2, you’re totally future proof and can play around with the map a little to tailor it to your own tastes. I know you told me all this at the time I bought the SPS2 but hey, it takes a little while for things to sink in with me!

Of course, if you'd like an independent road test review then that might change things. That reminds me, I must update my first review as the 'throttle off' behaviour has smoothed out loads since first installation.

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Mondeo Tdci 115, sweet!

DaveH

You're probably right Rich, a few tanks to fully benefit from the Optimax but you get a fair benefit immediately - I scared myself this morning with the way it took off up the road when I 'nipped' out at a T junction.

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Mondeo Tdci 115, sweet!

EddyH

For normal remaps yes you need a few tanks for adaption to take place and the ECU to adjust timing itself, this still won't take full advantage of Optimax though. However with Revo and an SPS device simply make sure the optimax has chance to get into the fuel system then tweak the SPS device and the benefit is instant as the timing is alterated straight away.

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EddyH

Audi A6 Avant 2.7 TDI
Audi A3 2.0 TDI Sport

DaveH

That'll be what I felt then!

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Mondeo Tdci 115, sweet!

rich1068

I'm saying nothing.

You big sissy.

Damn.

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Rich.

Skoda Octavia RS

RevoKev

Hey guys, my personnal view on going for 3 or 4bar specific software is to go for the 4bar software. However my advice to alot of customers is normally to go for 3bar software and then upgrade later to 4bar software, if you're anything like me it doesn't take long to get used to the extra power and want more!

4bar software is definatley the way to go if you're doing other mods to the car; dp, exhaust, uprated I/C, etc. and I'd advise using 98ron with it all the time, in fact I'd advise that for any 1.8t software or not.

If you're interested I posted a thread on the Revo forum regards 3 and 4bar FPR specific programs... I think James pretty much covered it though!...

Revo Forum - 3 and 4 bar FPR specific software

QorbeQ

When people say "98ron" do they mean JUST Optimax or does it include the 97ron BP Ultimate?

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Rob

Utterly unmodified Octavia Estate 1.8T Elegance
Oh ... I have upgraded to Philips Vision Plus headlights and Blue Vision sides
Maybe I'll go Jabba, maybe Revo, maybe AmD, who can tell ...

DGW

That makes a lot of sense to me. TY.

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Denis

2002 Octavia 1.8T 4X4 turbo Estate - rebreathed on by Jabba ... 31.93mpg
2007 Fabia vRS - CC, ESP and full leather trim by Seat Surgeons ...48.57 mpg...

DaveH

I think the octane rating is pretty critical so I don't think 97ron Ultimate would be a great idea. With higher octane fuel you can run more ignition but too much ignition for a particular fuel = detonation. Having said all that, if detonation were to occur the ECU should back the ignition off fairly rapidly to prevent damage. Clear as mud?