My RX7SP build up

[RICE RACING]

I'll post up some other incremental times of the F40, I have 3 separate tests (one factory) two independent (USA and UERO models) and on peak power band test 60mph to 90mph and 70mph to 90mph I have ........

(Peak power band for all cars)

60mph-90mph
EURO F40 = 2.70 seconds
USA F40 = 2.90 seconds
RICESP = 2.59 seconds

70mph-90mph
EURO F40 = 1.90 seconds
USA F40 = 2.10 seconds
RICESP = 1.76 seconds

^ back this up with 2.56 and 1.73 seconds (on a quite damp track too) so no one hit wonder

[Ian]

Just out of curiosity how is your bottom end. Do you have enough pull out of corners IE is the car good for the track or just high power runs?

[RICE RACING]

Originally Posted by Ian

Just out of curiosity how is your bottom end. Do you have enough pull out of corners IE is the car good for the track or just high power runs?

Did you watch the youtube video? it is insane. for spread of power. In 2nd gear I just roll onto it really gently as if I stab it at low revs I end up off the road (this is why I have traction control fitted, but turned off in that vid to illustrate the power).

I have full 20psi boost at 4400rpm (not just the boost but the power is very strong from these revs onwards, its average power is flat out unreal from 4k to 8k rpm very flexible for a 13B engine) the whole set up is more around mid range power rather than anything to do with top end

I could improve it even more by dropping the exhaust system pressure by not running a catalyst, but I like it legal and the sound is really nice too in note and volume.

[Ian]

Originally Posted by RICE RACING

Did you watch the youtube video? it is insane. for spread of power. In 2nd gear I just roll onto it really gently as if I stab it at low revs I end up off the road (this is why I have traction control fitted, but turned off in that vid to illustrate the power).

I have full 20psi boost at 4400rpm (not just the boost but the power is very strong from these revs onwards, its average power is flat out unreal from 4k to 8k rpm very flexible for a 13B engine) the whole set up is more around mid range power rather than anything to do with top end

I could improve it even more by dropping the exhaust system pressure by not running a catalyst, but I like it legal and the sound is really nice too in note and volume.

Well I am impressed that you are running a cat converter. This is something I will have to install this year. Just surprised you do not burn through those cat converters. Do you have a air pump attached to your catalyst? Do you have to pass emissions?

[RICE RACING]

Originally Posted by Ian

Well I am impressed that you are running a cat converter. This is something I will have to install this year. Just surprised you do not burn through those cat converters. Do you have a air pump attached to your catalyst? Do you have to pass emissions?

We have 3 gas analysis machines at work and the emissions are better than original and well under the specifications. I spent allot of time on fuel atomization and tuning to make that happen and also to make the CAT's live.

On that side I only use SMB & Performance Weaponry Catalysts, this has been a long term test project between us on this and their offering has delivered in power and durability and ultimately measured performance against known iconic cars it's nice to have the real engineering data on their abilities too showing the effect of pressure and turbine response and to a greater degree the power restriction in running such a device in a car of this proven power and performance.

Last time I checked the CAT it was excellent, I believe the only thing that kills these types of things is long term running on non ideal *chemically correct* mixtures at low speeds (especially cruise) where the rich mixture has time to react in the body and thus overheat and kill it. Full throttle and high gas flows dont kill cats as there is not enough time for the reaction to happen and thus little more temp build up apart from what is in the system at the point anyway *and this is reflected in the beginning and end AFR value you measure*.

Glad you like it I absolutely love it was always my goal to equal Ferrari F40 performance, infact its better than allot of modern day alternatives... even the famed ZRI that only generates 0.48G accel at 81mph or 130kmh V's my RICESP @ 0.52G