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-   -   1.6 MX5 enine tuning (http://www.haynes.co.uk/forums/showthread.php?t=7585)

MarkB 9th January 2012 09:53 AM

Less is more...:)

skov 9th January 2012 02:55 PM

Yeah, they're both aftermarket engine management systems intended to replace your original ECU.
The benefit is that they allow you to completely mess up, erm I mean tune, your spark and fuel :)

Unless you're going to make heavy engine mods, go forced induction, or just like to spend endless hours tapping numbers into a lap top I wouldn't bother!

Saying that, I probably will replace my OEM ECU post-IVA, but mainly because I'm a bit of a masochist and like playing around with electrickery :D

robo 10th January 2012 10:05 PM

Quote:

Originally Posted by skov (Post 69604)
Yeah, they're both aftermarket engine management systems intended to replace your original ECU.
The benefit is that they allow you to completely mess up, erm I mean tune, your spark and fuel :)

Unless you're going to make heavy engine mods, go forced induction, or just like to spend endless hours tapping numbers into a lap top I wouldn't bother!

Saying that, I probably will replace my OEM ECU post-IVA, but mainly because I'm a bit of a masochist and like playing around with electrickery :D

I have lost count of the cars I have tuned and ended up over doing it. N/A wants to be kept to a mild cam, sensible comp ratio and a well sorted ignition/fuel set up. That way it keeps the all important driveability and remains useable on pump fuel. If you want more, turbo is the only way.:D

MoysieWRX 10th January 2012 10:17 PM

Quote:

Originally Posted by robo (Post 69651)
I have lost count of the cars I have tuned and ended up over doing it. N/A wants to be kept to a mild cam, sensible comp ratio and a well sorted ignition/fuel set up. That way it keeps the all important driveability and remains useable on pump fuel. If you want more, turbo is the only way.:D

Just a thought,
My old Subaru Impreza WRX (as my avatar) had some fancy fuel management system and was pumping out around 350BHP, it had a "Dual map " setup where i could use on one setting for "Road" :rolleyes: (mild boost) use and another setting for performance :D (WILD boost) including launch control etc .

Could something like this be implemented into one of these Fuel management systems that have been mentioned.
Would probably only realy be worthwhile if the motor was turbo'd :confused: .

robo 10th January 2012 10:58 PM

Would almost be worth grabbing an engine from something else in the mx5 line up.Model
MX-5 (mk1)
MX-5 1.8i (mk2)
MX-5 1.8i (mk2 rev)
MX-5 Turbo (mk2 rev)
Year of production
1989-97
1998-2000
2000-05
2004-05
No. produced
720,407 units (mk1+mk2)
720,407 units (mk1+mk2) 720,407 units (mk1+mk2) 720,407 units (mk1+mk2)
Layout
Front-engined, Rwd
Front-engined, Rwd Front-engined, Rwd Front-engined, Rwd
L / W / H / WB (mm)
3950 / 1675 / 1230 / 2265
3945 / 1675 / 1230 / 2265 3955 / 1680 / 1235 / 2265

3965 / 1680 / 1228 / 2265
Engine
Inline-4, dohc, 4v/cyl
Inline-4, dohc, 4v/cyl, variable intake manifolds
Inline-4, dohc, 4v/cyl, VVT Inline-4, dohc, 4v/cyl, turbo
Capacity
1598 cc
1839 cc
1839 cc 1839 cc
Power
115 hp
140 hp
146 hp (160hp for Japan)
178 hp (SAE) / 172 hp (JIS)
Torque
100 lbft
119 lbft
124 lbft
166 lbft (SAE) / 154 lbft (JIS)
Gearbox
5M
6M
6M
6M
Tires
185/60HR14
195/50VR15
205/45WR16
205/40WR17
Weight
955 kg
1030 kg
1100 kg
1120 kg
Top speed
114 mph*
126 mph*
125 mph*
132 mph (est)
0-60 mph
9.1 sec*
7.8 sec*
8.2 sec*
6.7 sec**
0-100 mph
27.7 sec*
22.5 sec*
24.2 sec*
18.3 sec**

Some of the other lumps are no disgrace.

Bob


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