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Mazda Rotary Club

Cars by Model Type => 3rd generation RX-7's => Topic started by: rx7.eu on January 19, 2012, 09:05:29 PM

Title: Performance upgrades
Post by: rx7.eu on January 19, 2012, 09:05:29 PM
My car has been at the specialists having some \'small\' upgrades, 3 days work:

Full stainless steel de-cat, stainless steel sports silencer with twin rotor shaped tail ends, racing beat air flow modded to shape onto new stainless steel charge cooler, new k&n air filter, electric front heated windscreen, oil change and a couple other small improvements and repairs.

Huge improvement to the horses :cool and very loud :chat

I also got some goodyear ultragrip 7+ winter tyres, not put on yet as I am waiting for the snow...;)
Title: Performance upgrades
Post by: rx7.eu on January 19, 2012, 09:47:29 PM
Mean intercooler, not chargecooler.
Title: Performance upgrades
Post by: tiger18 on January 20, 2012, 08:32:45 AM
So did you do all that on a standard ECU?
Title: Performance upgrades
Post by: wolfie1 on January 20, 2012, 11:02:45 AM
winter tyres are beneficial to you when the temperature drops to 7c and below, not only when its snowing
Title: Performance upgrades
Post by: rx7.eu on January 20, 2012, 01:22:55 PM
Same ECU, no need for ECU upgrade because something with the wastegate/actuator and something else were changed/modified. I do not know what exactly was done as it was a little trade secret accumulated after many years of experience.
 
I tell you the work and performance is impressive. Not only was there a hugh power increase but it runs more smoothly at low revs.
 
I agree about the winter tyres, I have had winter tyres on my SLK since Oct 2011. Have been using winter tyres for many years because I worked and lived in cold Switzerland. May fit them to the RX7 next week if the weather really gets cold. Meanwhile the Falkens I have on are good enough.
Title: Performance upgrades
Post by: rx7.eu on January 20, 2012, 01:49:17 PM
(http://www.gavinbrooks.com/images/stories/RX7/hi-res-engine-bay.jpg)
Here is a quick iphone photo of engine bay.
 
(http://www.gavinbrooks.com/images/stories/RX7/twins-new-silencer.jpg)
And twin Rotor shaped silencer ends.
Title: Performance upgrades
Post by: rx7.eu on January 20, 2012, 02:07:14 PM
Here is the whole car...
(http://www.gavinbrooks.com/images/stories/RX7/rx7_taken_19_jan_2012.jpg)
Title: Performance upgrades
Post by: tiger18 on January 20, 2012, 04:37:20 PM
Some one has ported the wastgate, if it doesnt hold and the boost creeps say bye to the engine. Id advise your next buy to be a apexi power fc.
Title: Performance upgrades
Post by: wolfie1 on January 20, 2012, 04:44:11 PM
hmmm, just watch yourself!
Title: Performance upgrades
Post by: rx7.eu on January 20, 2012, 05:22:21 PM
Thanks for the warnings.
 
I checked with the senior engineer (30 years experience) who did the work and he assured me they did other changes/modifications and this is not necessary. However I shall look out for one..... but they seem rather expensive so I will wait a little later, perhaps end of next month next salary. I may actually go for a Haltech unit.
Title: Performance upgrades
Post by: playtime on January 21, 2012, 12:22:15 PM
Call me sad, but Im quite taken with the rotary shaped tips :)
Title: Performance upgrades
Post by: wolfie1 on January 21, 2012, 06:06:01 PM
i really like that rotor brake light for the rx8, just wish there was something similair for the fd!
Title: Performance upgrades
Post by: skybusr34 on January 21, 2012, 06:24:37 PM
full respect to your engineer, but as others have said dude. i would be extremely nervous about planting the loud pedal if i was you without an ecu with map to suit.  

but i fear............

"think i lost a tip "   thread starting by you soon :-(

good mods there. and a map would extract more hoomph out of them:yes
Title: Performance upgrades
Post by: dthebuk on January 21, 2012, 07:59:51 PM
if its dave at rotechniks chances are he\'s right. he knows his stuff
Title: Performance upgrades
Post by: rx7.eu on January 21, 2012, 10:38:52 PM
Thanks again, I love the rotor tails cos its very different, and sadly but perhaps more suited to old boring grown ups like me!
Yes it was Dave who did all the work, I asked for him due to strong recommendations. He actually spent three and half days on the car this week, but there is still a little more work for him to do next week. I hope he will also do the ECU and twin turbo upgrades to get a little extra ooomph. I also fancy some new wheels like an Enkei make which I was about to buy some second hands from a nice helpful guy who owns rx7spares but I decided I will will wait a little as money is tight.
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