Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: speedfreak on September 29, 2009, 10:31:19 PM

Title: My RX-7 mapped, the story!!
Post by: speedfreak on September 29, 2009, 10:31:19 PM

I have had my Rex for a couple of months now & although it was obviously a good car it wasn\'t running to the best of it\'s potential. The reasons will become clear!
The previous owner told me it was running the base map on the power FC ECU & that a re-map would be required. As I hadn\'t owned one of these cars before it was difficult to judge just how good/bad it was running, it felt quick, albeit lumpy, with hesitation at around five & a half k revs, & plenty of backfires on the overrun.
I booked a mapping session with RE:Worx, nr Portsmouth today, & came back with a huge grin. First of all they needed to sort out a cooling issue, I didn\'t realise it but the intercooler duct was missing, so the i/c didn\'t have a direct flow of cold air. Then they discovered a strange problem with the coolant system. It looked to me that someone had modified the pipework to miss out the AST bottle, but that was only half the story. That mod had been started, but not finished! There was nowhere for the coolant to overflow to, & to compound matters it didn\'t even have a pressurised cap. This was something they had not seen before, & I was told I was very lucky the engine didn\'t go pop!
Well, they sorted this out too, & also rewired the fuel pump, as the voltage drop through the wiring meant the car ran lean.
This too was sorted & mapping could begin.
Other than the A\'pexi Powert FC & commander, the only other mods are Trust intercooler, A\'pexi air filters, de-cat & free flow exhaust.
So, the end result? 333bhp @ the flywheel & 300lbft torque, @ 0.9bar.
320bhp @ 0.8bar.
Not too shabby as the standard figure for a \'93 car is 255bhp.
The car now pulls like the preverbial train, it was quick before but now it is really something.
A big thumbs up to the RE:Worx guys, very helpful too, highly recommended.
I cannot wait for sunday at santa Pod to see what sort of times I can get!!
[/IMG]
(http://i224.photobucket.com/albums/dd75/sandbagger_bucket/th_CIMG2031-1.jpg) (http://s224.photobucket.com/albums/dd75/sandbagger_bucket/?action=view¤t=CIMG2031-1.jpg)
 
(http://i224.photobucket.com/albums/dd75/sandbagger_bucket/th_CIMG2109.jpg) (http://s224.photobucket.com/albums/dd75/sandbagger_bucket/?action=view¤t=CIMG2109.jpg)
 

Title: My RX-7 mapped, the story!!
Post by: R1Dude on September 30, 2009, 09:21:34 AM
Glad its all sorted, impressive figures too, mines in on monday for mapping now I got boost controller fitted, as long as I get my lights done and find a new intercooler that is lol
Title: My RX-7 mapped, the story!!
Post by: gandyRX on October 31, 2009, 09:06:23 PM
Quote from: speedfreak;644976

I have had my Rex for a couple of months now & although it was obviously a good car it wasn\'t running to the best of it\'s potential. The reasons will become clear!
The previous owner told me it was running the base map on the power FC ECU & that a re-map would be required. As I hadn\'t owned one of these cars before it was difficult to judge just how good/bad it was running, it felt quick, albeit lumpy, with hesitation at around five & a half k revs, & plenty of backfires on the overrun.
I booked a mapping session with RE:Worx, nr Portsmouth today, & came back with a huge grin. First of all they needed to sort out a cooling issue, I didn\'t realise it but the intercooler duct was missing, so the i/c didn\'t have a direct flow of cold air. Then they discovered a strange problem with the coolant system. It looked to me that someone had modified the pipework to miss out the AST bottle, but that was only half the story. That mod had been started, but not finished! There was nowhere for the coolant to overflow to, & to compound matters it didn\'t even have a pressurised cap. This was something they had not seen before, & I was told I was very lucky the engine didn\'t go pop!
Well, they sorted this out too, & also rewired the fuel pump, as the voltage drop through the wiring meant the car ran lean.
This too was sorted & mapping could begin.
Other than the A\'pexi Powert FC & commander, the only other mods are Trust intercooler, A\'pexi air filters, de-cat & free flow exhaust.
So, the end result? 333bhp @ the flywheel & 300lbft torque, @ 0.9bar.
320bhp @ 0.8bar.
Not too shabby as the standard figure for a \'93 car is 255bhp.
The car now pulls like the preverbial train, it was quick before but now it is really something.
A big thumbs up to the RE:Worx guys, very helpful too, highly recommended.
I cannot wait for sunday at santa Pod to see what sort of times I can get!!
[/IMG]
(http://i224.photobucket.com/albums/dd75/sandbagger_bucket/th_CIMG2031-1.jpg) (http://s224.photobucket.com/albums/dd75/sandbagger_bucket/?action=view¤t=CIMG2031-1.jpg)
 
(http://i224.photobucket.com/albums/dd75/sandbagger_bucket/th_CIMG2109.jpg) (http://s224.photobucket.com/albums/dd75/sandbagger_bucket/?action=view¤t=CIMG2109.jpg)
 
 


 
i reconise that car   :chat
 
 
(http://i211.photobucket.com/albums/bb80/gandyVTR/369.jpg)
 
(http://i211.photobucket.com/albums/bb80/gandyVTR/028-4.jpg)
 
used to be my old one, but it dosent sound anything like the spec when i owened it, when i had it, it was running around 320bhp, just out of curousity when and where did you buy it? if you wanna any more about the history about the car give me a pm
 
thanks
 
andy
Title: My RX-7 mapped, the story!!
Post by: gandyRX on October 31, 2009, 09:13:12 PM
just had a look at your previous posts mate sounds like its been sold a couple of times before you bought it if you want to know any bits about it when i owned it feel free to ask
Title: My RX-7 mapped, the story!!
Post by: speedfreak on November 01, 2009, 07:22:09 PM
Hey thanks Andy, you have pm.
 
B.
Title: My RX-7 mapped, the story!!
Post by: speedfreak on November 01, 2009, 07:40:14 PM
except you don\'t, how the hell do you send pm\'s on here?
Title: My RX-7 mapped, the story!!
Post by: gandyRX on November 02, 2009, 03:22:28 PM
sorry mate false of habbit, dont think you can send pm\'s on this site unless your a full member, i can tell you stuff about it in this thread if you dont mind it being displayed publicly
Title: My RX-7 mapped, the story!!
Post by: speedfreak on November 02, 2009, 03:42:41 PM
Yeah, I don\'t mind at all mate, anything & everything you can tell me would be cool. I have been looking at some of your old posts too, & you put up a cell number, is it still current & do you mind if I call you?
 
I notice at one point you mention Tein shockers, but the guy I bought it from told me they were Ohlins coilovers. The adjustable nob is gold if that tells you if they have been changed?
 
Cheers,
Brook.
Title: My RX-7 mapped, the story!!
Post by: gandyRX on November 02, 2009, 04:21:26 PM
well i bought the car in may 07 from a lady who imported it from japan direct from japan, i was the second owner. it had very low mileage which is unusual for an rx7, think it worked out at something like 27k or something like that, could be wrong but it was very low. it had a stage 1 cat back exhaust from rotechniks and a k&n induction kit. it came with a apexi ecu and controller but wasnt mapped at the time, it had full tein racing suspension and 19inch alloys, sorry i forget the name. it also had a full racing clutch and a blitz turbo timmer.
 
First thing i did was buy the apexi filters and jp racing exhaust, changed the badges and some of the interior bits, then i had a clifford alarm fitted and i fitted a kenwood stereo and made a lighting box above it and wired it to the stereo so the rx7 badge was lit up by the blue leds behind it. i also fitted a sub and amp and a nice set of wing mirrors
 
Then it was taken to surrey rolling road where it made 298.5bhp, but i was told it was running rich on idle and lean on boost, it was also running 1.3 bar which was too high, so after that it wasnt driven on boost all the way home.
 
Next day i spoke to carl at heyward rotary on here and it was taken for mapping, we had a really good mapping session and he took me all through the stages for it. after mapping it felt like a new car, it was alot faster and was running less boost, it had no flatspots and pulled well in each gear, it was fantastic
 
Next something rather unfortunate happend, some dappy woman reversed into the front bumper and cracked it so it was resprayed and the number plate moved into the center
 
Then i basically just kept it clean as started detailing and entering it into compertitions and shows
 
Then after about a year i decided that i wasnt driving it enough and it was a waste so i reluctantly decided to sell her, i still miss her to this day but i wouldnt drive her enough.
 
thats all i remember really ive got lots of pictures but it looks totally different now,
 
one thing that is confusing me is about the mapping and cooling bits, mainly because carl on here mapped it and the cooling system was perfect, i know the cooling was good because i was looking into getting a vmount set up but i decided to sell her before i got it
 
there should be mountains of paperwork and even the original import documents
 
hope that helps
Title: My RX-7 mapped, the story!!
Post by: gandyRX on November 02, 2009, 04:22:07 PM
do you have any other pics of her?
Title: My RX-7 mapped, the story!!
Post by: gandyRX on November 02, 2009, 04:24:05 PM
oh yeah sorry forgot to mention yes my mobile number is still the one i use lol so feel free to call if you like, probably easier to be honest coz theirs too much to write down lol
Title: My RX-7 mapped, the story!!
Post by: gandyRX on November 02, 2009, 04:43:45 PM
pic of her at SRR
(http://i211.photobucket.com/albums/bb80/gandyVTR/080-1.jpg)
 
some more pics
(http://i211.photobucket.com/albums/bb80/gandyVTR/025-5.jpg)
(http://i211.photobucket.com/albums/bb80/gandyVTR/045-3.jpg)
(http://i211.photobucket.com/albums/bb80/gandyVTR/049-3.jpg)
(http://i211.photobucket.com/albums/bb80/gandyVTR/070-4.jpg)
(http://i211.photobucket.com/albums/bb80/gandyVTR/068-3.jpg)
(http://i211.photobucket.com/albums/bb80/gandyVTR/028-4.jpg)
(http://i211.photobucket.com/albums/bb80/gandyVTR/358-1.jpg)
(http://i211.photobucket.com/albums/bb80/gandyVTR/359-1.jpg)
(http://i211.photobucket.com/albums/bb80/gandyVTR/367-1.jpg)
(http://i211.photobucket.com/albums/bb80/gandyVTR/377.jpg)
(http://i211.photobucket.com/albums/bb80/gandyVTR/369.jpg)
Title: My RX-7 mapped, the story!!
Post by: gandyRX on November 02, 2009, 04:44:37 PM
i do have some more but it will take me a while to host them
Title: My RX-7 mapped, the story!!
Post by: speedfreak on November 02, 2009, 06:08:39 PM
That is great info Andy, thanks.
I will give you a call later, hope thats ok.
B.
Title: My RX-7 mapped, the story!!
Post by: gandyRX on November 07, 2009, 07:49:34 AM
hey mate can you text me your email address so i can send those pics you wanted
Title: My RX-7 mapped, the story!!
Post by: speedfreak on November 07, 2009, 06:14:31 PM
Yes, I have sent you a text Andy.
 
Do you know what dif was fitted by Haywards as well please mate?
 
Cheers,
Brook.
Title: My RX-7 mapped, the story!!
Post by: gandyRX on November 08, 2009, 07:45:34 AM
youd have to speak to carl at hayward mate, it did have a uprated diiff in it from japan but the lady before me changed it for a standard on, there was a recipt in the paper work showing which one it was, not sure if its been changed after me but carl should be able to sort you out :3gears-lh