SP motorsport on my SE (updated Dyno pics)

[blackster]

That's better; the exhaust would expect to achieve 15 rwhp at least, or 11 rwkw.

I think people need to realise is that dyno figures can be manipulated according to how a tuner sets up his dyno.

My previous frenchie 130kw which was dynoed at the same place, put out 105.6kwatw on a 4th gear power run, it represents 20% loss through the drive train. Other guys with the same car got roughly the same figures on the day.

The SE put out 113rwkw with the mod, when someone states that a stock SE which is 121kw at the motor puts out 108rwkw, that figure doesnt compute according to that dyno. In theory that stock SE 108rwkw = 130kw at the motor give or take and has only had a 11% drive train loss.

[MikeyK]

So, has anybody installed the complete MX5 Mania \"SE Turbo Upgrade kit\".
http://www.mx5mania.com.au/enginebay.htm

If so, does it make a significant performance difference compared to the standard SE Turbo?

blackster, are your car pictures still posted somewhere?

[sirbob]

My understanding of the difference between a hi flow cat and a metal substrate cat is that a high flow cat uses bigger-than-normal ceramic balls that are coated with the catalyst within a larger case. This give a standard hi flow cat a larger flow path, but the gases still experiance significant turbulence in navigating through the matrix.

A metal substrate cat, on the other hand, is a honeycomb of the catalyst metal, providing basically a straight flow path with minimal turbulence, plus without the ceramic balls it should be lighter also.

I had a metal substrate hi flow cat in the NB and when you looked through it in the light you could plainly see your hand out the other side. I had no troubles with it and would definately reccomend one.

A word to the wise, however, due to the faster flow rate and decreased surface area of a metal substrate cat, you will get significant unburnt fuel making it past the cat and all of the snap crackle and pop gang will show their head under hard deceleration. Note, a good tune will probably get rid of the excess fuel anyway and avoid this occuring.

[ASE05]

So, has anybody installed the complete MX5 Mania "SE Turbo Upgrade kit".
http://www.mx5mania.com.au/enginebay.htm

If so, does it make a significant performance difference compared to the standard SE Turbo?

blackster, are your car pictures still posted somewhere?

I've got the kit fitted with the option of 3" exhaust and metal cat.

Went from 106.5rwkw to 142.?rwkw with the above. Fitted an EXEDE piggy back ECU and it initially went to 149.5rwkw with nearly 11psi but this was a bit too close for comfort so the boost was wound down to 10psi and a play with the EXEDE netted 143.1rwkw. All on the same dyno, same gear, same tyre pressure, same operator.



A recent dyno day @ Mercury Motorsport saw her put out 144.2rwkw. Compared to a couple of NC's on the day putting out between 86 & 90rwkw.



I'm glad I did it

[blackster]

blackster wrote:

The SE put out 113rwkw with the mod, when someone states that a stock SE which is 121kw at the motor puts out 108rwkw, that figure doesnt compute according to that dyno. In theory that stock SE 108rwkw = 130kw at the motor give or take and has only had a 11% drive train loss.

Only Mazda claimed 121kw at the engine; everywhere else you will see 178hp (132Kw) gross. That's why I asked about your stock figure before mods. to compare with after the mods.

If you want to see "GROSS" figures just look at Mania's initial claims!!!!

I dont doubt your figure, if you say you got 108rwkw stock on that particular dyno then you did, but I can say that I have seen the same car dynoed at 3 different places and there was a descrepancy anywhere between 1-10 kw @ ATW in similar temperature environments/tyre pressure. Hence why i said different tuners set up there dyno's differently or there dyno reads differently.

As far mania is concerned they reckon the stock SE runs 110rwkw and with just the exhaust it should be getting 120rwkw, I think thats an over exageration. I believe my car is the 2nd to have the SP motorsport fitted from there and I believe the first one got 116rwkw (not dynoed at mania), which was boyracer's.

Boris, would you mind sharing what GFB BOV model you have on your SE ,is it basically a straight fit on like the 20mm turbosmart ?

[blackster]

I've got the kit fitted with the option of 3" exhaust and metal cat.

Went from 106.5rwkw to 142.?rwkw with the above. Fitted an EXEDE piggy back ECU and it initially went to 149.5rwkw with nearly 11psi but this was a bit too close for comfort so the boost was wound down to 10psi and a play with the EXEDE netted 143.1rwkw. All on the same dyno, same gear, same tyre pressure, same operator.



A recent dyno day @ Mercury Motorsport saw her put out 144.2rwkw. Compared to a couple of NC's on the day putting out between 86 & 90rwkw.



I'm glad I did it

Impressive dyno derek, im suprised that your car put more power out in 3rd gear (shoot out) compared to a 4th gear (power run). I thought because of different gear ratio's you put more power out in the higher gears. Your A/F ratio in the 3rd gear shoutout is showing in the low 11s, would you happen to have the A/F ratio from your 4th gear power run? Id like to compare it to mine to see if im running rich.

[blackster]

http://www.gofastbits.com.au/index.php?parentid=products&option=products&sub_option=bovs&sub_sub_option=plumb_back

It's as close to a direct swap as you can get. No changes required in the plumbing, except a longer vacuum control line. It's the vacuum that keeps the valve open so tightening it a bit will mean you get earlier boost. Just check your stock valve sizes and GFB will supply the same (screw on ends to match).

Have you had to change the spring in order to ensure enough tension, I noticed you had to do that with the turbosmart.