Stage 1 S14a: 251.8bhp / 233 ft/lbs at the hubs [Archive]

Jez

18-01-2005, 18:50

Big al had his car on the Thor dyno pack at the weekend and got 252bhp and 233 ft/lbs running 1 bar of boost, Stage 1 setup with FMIC and my S14a stage 1 chip.

Heres the graphs, blue line is 1 bar, purple line is 0.8/0.9 bar:

http://bagpuss.swan.ac.uk/horsham-developments/images/big_al_power.gif

http://bagpuss.swan.ac.uk/horsham-developments/images/big_al_fuel.gif

http://bagpuss.swan.ac.uk/horsham-developments/images/big_al_boost.gif

Green Meany

18-01-2005, 19:02

Looking good.

Do you have any comments on the afr around 3500rpm where the boost comes in and again at 4400 where the boost increase momentarly, any reason to tweek the map ?? ie bring afr inline with the rest of the rev range. Or is it detremental the power/torque ??

:thumbs:

Jez

18-01-2005, 21:56

To be honest it could do with a bit of smoothing out, but its nothing significant. Trouble is on a car without an FMIC its not as bad. I need to be able to let the chip cope with a car with an FMIC and without. The fluctuation isn't bad at all - only goes between 12:1 and 12.5:1 (roughly) - it's a lot better than standard, which on most cars get a rich as 10:1!

The best thing is that the car is running 1 bar boost with an FMIC with no fuel cut and no det :) Also, what the graphs won't show, is the increase in drivability and smoothness.

Dai D

19-01-2005, 15:34

Must save must save must save

Chris B

19-01-2005, 17:07

Very impressive gains low down before spool up :nod:

19-01-2005, 17:34

Very similar top end to mine, with similar spec, 247@Wheels ~ 255/260@hubs.

The main +point of the chip for me, which I have stated before is the part-throttle response, ie most of the time you are driving on the roads.

andykaz

20-01-2005, 10:12

20-01-2005, 10:51

In what way mate? A heftier power delivery?
Would be interested to know :nod:
More torque, more pickup, very responsive on light throttle (like a NA car), others with the chip have noticed the same, its not just me.

Hashiriya

20-01-2005, 11:01

More torque, more pickup, very responsive on light throttle (like a NA car), others with the chip have noticed the same, its not just me.

yes the chip has been awesome. changed de-cat downpipe and chip all at once and noticed a huge difference. i'm not sure how much of it is down to the chip but i'm sure it's helped loads

andykaz

20-01-2005, 13:17

Thanks for that. When i have fitted my Walbro i think i will be investing in an S14 one :)

Jez

20-01-2005, 14:58

Thanks for that. When i have fitted my Walbro i think i will be investing in an S14 one :)

Cool - just get in touch when you are ready :)

Wookie

21-01-2005, 10:14

Hi Jez,

Are these for sale yet or still in the development stage. The power output with the chip, will that be around about the same for every car it's fitted to?

The only reason I ask is it seems a little low for a car running 15psi and a FMIC. I would have expected closer to 300bhp :confused:. Last RR session I had in my car I was putting out 272bhp at the fly at 4500rpm but I had wheel spin problems and couldn't go above that rev limt. If I could have managed a full run I would have expected the car to produce around or just over the 300bhp mark. Do you think this is a little optamistic??

Jez

21-01-2005, 11:09

The stage 1 chips are ready for sale now.

If you compare these torque and bhp figures with other S14s that have been on the Thor dyno pack you'll find they are pretty good. The figures are measured at the hubs, so they are not flywheel numbers. :)

There can be a huge difference between rollers/dyno, so it's not really fair to compare cars that have used different equipment.

300bhp at the fly is a bit optimistic for just 1 bar of boost.

Wookie

21-01-2005, 11:16

There can be a huge difference between rollers/dyno, so it's not really fair to compare cars that have used different equipment.
Yeh, I know what you mean :nod:

Current Spec s14a:
Hybrid FMIC
15psi Boost
Denso IK 24's
Walbro fuel pump
Apexi Air Filter
3" Exhaust System
3" De-cat
3" Front Pipe
S/steel turbo elbow

Will the chip be ok for the above spec?

The all important question HOW MUCH :D and are they easy to fit or can you give a price for fitting aswell.

cheers

Richard

Jez

21-01-2005, 11:21

Your car would benefit from fitting a stage 1 chip :)

Fitting is quite tricky, unless you're experienced with soldering - theres a fitting guide on my web site.

The chip is £175, fitting is £25 if you'd like me to do it. :)

Wookie

21-01-2005, 11:31

Thanks for that Jez. :thumbs:

It's a toss up between one of your chips or the SAFCII and AVCR just to get the car running properly at the moment. Does the chip control/set the boost limit? Does it need any extra mapping after fitting?

Im also looking at upgrading to a z32 afm, 550cc injectors and a GT2871 turbo towards the end of the summer, would it be possible to re-programme or upgrade to a new chip later on.

Sorry for all the questions but Im not technically minded, as you can tell. :D

Jez

21-01-2005, 11:42

I'd recommend getting an AVCR and an uprated actuator - a number of cars I've mapped have problems maintaining high boost levels to the redline, even though the turbos are capable. I'm pretty sure this is due to the weak actuators (usually set at 10psi) that come with the turbos.

My chip won't need mapping. My chip doesn't alter the boost settings but it does remove fuel cut :)

I will be producing 2 more chips in the future:
Stage 2 will be for the standard turbo, 550cc injectors and 1.2 bar boost.
Stage 3 will be for a GT28RS, 550cc injectors, Z32 AFM and lots of boost (yet to be decided)

To upgrade from stage 1 to 2 or 3 will be a 5 minute job that anyone can do :)

I'm mapping the stage 2 chip this Sunday - hopefully it'll all go well and be ready for sale soon :)

Wookie

21-01-2005, 11:58

I'll definitely be having one of these chips of you Jez :nod: :nod: and I'd want you to fit it aswell if that's ok. I'll sort out a new HKS actuator and and AVCR and be in-touch (hopefully by the end of the month). thanks again for the advice. :thumbs:

Richard

Jez

21-01-2005, 12:00

Cool - just email me when you're ready :)

BTW - you probably won't need the actuator until you want to run more than 1 bar.

Ian M

21-01-2005, 16:30

Excellent result Jez. :clap:

Makes me wonder what my car will do on the rollers. thats if i can fix my running problems in time :annoyed:

big al

21-01-2005, 17:34

thanks for haveing a look i take its running fine what you said

Jez

21-01-2005, 18:27

thanks for haveing a look i take its running fine what you said

erm - remind me what I said... :)

big al

21-01-2005, 18:59

21-01-2005, 20:35

Just to remind people this isnt unexpected power from jez's chip.
With 1.1Bar I got 247@Tyres, generally estimated at 257@hubs (+10)
I dont know the Torque@wheels but it was 295 ft/lbs :notworthy :fly, power was 281@fly

http://www.suicidesquad.co.uk/sm/sxoc/THOR/pro%20sport%2027-11-04%20corrected.jpg

Big al had his car on the Thor dyno pack at the weekend and got 252bhp and 233 ft/lbs running 1 bar of boost, Stage 1 setup with FMIC and my S14a stage 1 chip.

Jez

21-01-2005, 21:50

i take its running fine what you said

Yup - it's all good :)

AntsW

21-01-2005, 22:56

hi jez ive been reading few posts about your chip. i had my boost upped to 14psi and i was hitting fuel cut. heres what im running

Blitz NUR-Spec exhaust -Walbro fuel pump - Bailey Evo dump valve - Denso IK24's- Dano front pipe - S/S Manifold - Air Box Mod - Bren Device Set @11psi @256.2bhp

to go on the car = hybrid fmic - s/s turbo elbow - Blitz bov. and i want to tun the boost bck up to 15psi. is the chip ok for all this?

cheers ant

Jez

21-01-2005, 23:06

is the chip ok for all this?

Yup, it'll be ideal :)

AntsW

21-01-2005, 23:09

ok so the chip will sort fuel cut out. can i up my boost even more without getting det or maxing injectors?

Jez

21-01-2005, 23:14

The chip removes the fuel cut and will sort the fuelling for up to 15psi :)

James23

22-01-2005, 02:30

Just a quick question :) My S14 is one with an S14a ECU (which is common for late S14s i think) guessing that means S14a chip for me? (later this year :) )

Jez

22-01-2005, 10:52

Just a quick question :) My S14 is one with an S14a ECU (which is common for late S14s i think) guessing that means S14a chip for me? (later this year :) )

Yes, thats right.

You'll probably have to get me to fit - I might have to extract the ROM code from the ECU as I'm not sure if all the code is the same as the "real" S14a ones.

ELORTO

22-01-2005, 12:25

hi jez ive been reading few posts about your chip. i had my boost upped to 14psi and i was hitting fuel cut

How come? What does happen when fuel cut is hit? I am running 1 bar and I think I have never feels this ?

weegaz22

22-01-2005, 12:29

How come? What does happen when fuel cut is hit? I am running 1 bar and I think I have never feels this ?

your face bounces off the steering wheel :nod:

Jez

22-01-2005, 13:19

How come? What does happen when fuel cut is hit? I am running 1 bar and I think I have never feels this ?

Yeah, you headbutt the windscreen.

You probably don't get fuel cut as the air temps are higher in Spain than in the UK. Cold air is denser than warm air and therefore trigger fuel cut at a lower boost pressure.

ELORTO

22-01-2005, 20:06

jejejejej! So, I don't want to try it, poor my steering wheel!

Yeah, we have about 20ºC by day and 13-15º by night most time. But I think I don't hit fuel cut because the way I drive, I don't even use to get 6000 rmp, and never redline.
Thx.

22-01-2005, 20:23

But I think I don't hit fuel cut because the way I drive, I don't even use to get 6000 rmp, and never redline.
most likely revs for fuel cut is ~4000revs @ peak torque, on full boost.

ELORTO

23-01-2005, 03:17

most likely revs for fuel cut is ~4000revs @ peak torque, on full boost.

:confused: Then how come I have never hit fuel cut? Even running at 1-1,1 bar???

Jez

23-01-2005, 08:25

Because your air temps are high. 20 deg C is fairly warm compared to here - its -3 deg C at the moment...

AndyStuttgart

24-01-2005, 09:59

@ELORTO:
I just hit fuel cut when giving full throttle at once and the boost gauge jumps above 16 or 17 psi for a moment. I can prevent that by being more sensible with my right foot, so I have no overboost.

ELORTO

25-01-2005, 14:19

Hi Andy, little internet :P
I got it Jez, it is not that cold here so I understand why I don't hit fuel cut, I also use to be sensible with throttle as Andy says, it might help too.

Another subject, are you gonna test stage 2 chip with Sard/blitz injectors?

Regards.

Jez

25-01-2005, 14:27

Another subject, are you gonna test stage 2 chip with Sard/blitz injectors?

Yes, if I can find a volunteer :)

200sxer

21-02-2005, 08:28

Yes, if I can find a volunteer :)

I have a set of Blitz injectors sitting here waiting to be installed and as you know also waiting for stage 2.

Let me know :)