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Search: Posts Made By: Brettus
Forum: New Member Forum 07-16-2018, 03:10 AM
Replies: 6
Views: 174
Posted By Brettus
just don't premix at all ........

just don't premix at all ........
Forum: Series I Engine Tuning Forum 07-14-2018, 09:59 PM
Replies: 10
Views: 476
Posted By Brettus
The issue with the gear maps is that you don't...

The issue with the gear maps is that you don't know which table will be used (without testing) and it can swap between tables without you changing gear as JB mentioned . To overcome this is pretty...
Forum: Series I Major Horsepower Upgrades 06-21-2018, 11:07 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
Seems I'm not done with experimenting . Got some...

Seems I'm not done with experimenting . Got some new ideas in the pipeline for another crack at this . Getting another engine built .

Maybe this one will be ..................... IT !
Forum: Series I Engine Tuning Forum 06-11-2018, 09:13 PM
Replies: 1,148
Views: 197,034
Posted By Brettus
Jimmy .... I don't think Arctic is turboed ...so...

Jimmy .... I don't think Arctic is turboed ...so he will want to aim for around 12.5 , not 11.2 .
Forum: New Member Forum 05-29-2018, 12:23 AM
Replies: 22
Views: 507
Posted By Brettus
Stage 1 : read the section on power upgrades ...

Stage 1 : read the section on power upgrades
Stage 2 : realise you are SOL
Stage 3 : sell rx8 and buy a car with power
Forum: Series I Tech Garage 05-22-2018, 11:06 PM
Replies: 5
Views: 292
Posted By Brettus
This is symptomatic of a failing fuel...

This is symptomatic of a failing fuel pump/blocked fuel filter . How many kms on the fuel pump ? They typically should be replaced every 100,000kms
Forum: Series I Aftermarket Performance Modifications 05-17-2018, 04:42 PM
Replies: 100
Views: 44,995
Posted By Brettus
Only real concern is that it's a waste of money,...

Only real concern is that it's a waste of money, time and effort ........................ IMO
Forum: Series II Forced Induction and Nitrous 05-09-2018, 03:31 PM
Replies: 35
Views: 2,618
Posted By Brettus
Would be very interested to know what indicaters...

Would be very interested to know what indicaters you were following to know to stop at 408 whp . You have plenty of fuel and turbo so why didn't you try for more ?
Forum: RX-8 Discussion 05-08-2018, 03:23 PM
Replies: 16
Views: 1,023
Posted By Brettus
Am I lazy for not following you on instagram or...

Am I lazy for not following you on instagram or are you lazy for not posting information here? Actually I didn't even know what you meant by 'IG' till today ..lol



That's exactly what I have...
Forum: General Automotive 04-23-2018, 01:25 AM
Replies: 25
Views: 1,086
Posted By Brettus
yeah ....it's really horrible having to wait 0.5...

yeah ....it's really horrible having to wait 0.5 seconds to get double the torque :Freak_ani
Forum: Series I Major Horsepower Upgrades 04-12-2018, 03:28 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
jcbrx8 .... I'm pretty sure 9krpm didn't mean to...

jcbrx8 .... I'm pretty sure 9krpm didn't mean to say E85 and 93 "on the same tune" .

But with what I do and recommend you can run on the same tune .

I do my tune for E28 (1 part E10 to 3 parts...
Forum: RX-8 Discussion 04-11-2018, 07:40 PM
Replies: 330
Views: 55,068
Posted By Brettus
Got a letter for each of my 8s the other day ....

Got a letter for each of my 8s the other day . TBH I'm more concerned about the lower arm issue than the air bag one ... I've seen what happens when those let go !
Forum: Series I Major Horsepower Upgrades 04-10-2018, 07:47 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
Great question ! What I'm experiencing only...

Great question ! What I'm experiencing only manifests itself at elevated mass flows and the dropoff in power/psi is sudden and dramatic . I said way back at my first dyno that it was like hitting the...
Forum: Series I Trouble Shooting 04-09-2018, 07:32 PM
Replies: 26
Views: 741
Posted By Brettus
I saw something very similar on a race car last...

I saw something very similar on a race car last week . It wouldn't rev past 7500 in 4th gear but was fine everywhere else . I logged it and found the throttle was opening and closing by itself ! The...
Forum: Series I Major Horsepower Upgrades 04-06-2018, 11:25 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
Yes any porting of the siamese ports makes it...

Yes any porting of the siamese ports makes it worse , making them smaller ...helps.
I have tried a tighter fitting sleeve (professionally inconel welded) ... it beat itself to death and I ended up...
Forum: Series I Major Horsepower Upgrades 04-05-2018, 11:13 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
That's the correction for temp and atmospheric...

That's the correction for temp and atmospheric pressure .
Forum: Series I Major Horsepower Upgrades 04-05-2018, 04:53 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
Ok - so I hit the dyno again yesterday ......

Ok - so I hit the dyno again yesterday ... different dyno again . Result ...pretty much the same . Please ignore the torque figure , it relates to dyno drum torque not engine torque . Actual torque...
Forum: Series I Major Horsepower Upgrades 03-30-2018, 03:55 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
I have tried that in the past ...but no , not at...

I have tried that in the past ...but no , not at the moment . I just reset the SSV table to have it open at 4000 . Which does help the turbo to spool up a little quicker and avoids the hesitations...
Forum: Series I Major Horsepower Upgrades 03-30-2018, 03:42 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
It's around 420g/s(56lbs/min) from the maf...

It's around 420g/s(56lbs/min) from the maf readings ,but hard to know how accurate those are. It seems to line up pretty well with the Matchbot calculations.
Forum: RX-8 Discussion 03-27-2018, 10:03 PM
Replies: 90
Views: 2,900
Posted By Brettus
couldn't tell you that ...I just know from...

couldn't tell you that ...I just know from injector pulse width logs that some fuel is still injected when engine braking for the Renesis....

See this log showing a full throttle power run follow...
Forum: Series I Major Horsepower Upgrades 03-25-2018, 03:52 AM
Replies: 1,688
Views: 141,263
Posted By Brettus
Finally got the actual Dyno from last week .......

Finally got the actual Dyno from last week .... 312kw (424hp)

https://cimg2.ibsrv.net/gimg/www.rx8club.com-vbulletin/627x787/80-dyno_2ddf411dc936769b3f321b7bb62f5d130da14d54.png
Forum: General Automotive 03-22-2018, 11:07 PM
Replies: 13
Views: 552
Posted By Brettus
I wanna be the first to make it brap !

I wanna be the first to make it brap !
Forum: Series I Major Horsepower Upgrades 03-20-2018, 02:14 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
Exhaust : twin system with separate pipe for WG...

Exhaust : twin system with separate pipe for WG ...Guess it's Equivalent to a 3.5" diameter single pipe.

Intake to turbo : 3"

Maf : extended stock maf range by about 15% using resistors
...
Forum: Series I Major Horsepower Upgrades 03-18-2018, 05:02 PM
Replies: 235
Views: 37,279
Posted By Brettus
Nice work James ! But ...........oh...

Nice work James ! But ...........oh man.............. your neighbors that are used to the Leaf are gunna love it when the WG opens !
Forum: Series I Major Horsepower Upgrades 03-15-2018, 04:02 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
Had it on my normal E28 mix with a little premix...

Had it on my normal E28 mix with a little premix thrown in.
Forum: Series I Major Horsepower Upgrades 03-14-2018, 01:18 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
I put the car on another dyno a couple of days...

I put the car on another dyno a couple of days ago as well and on that dyno it made 424whp .... identical setup, same settings .


Video from the dyno :
...
Forum: Series I Major Horsepower Upgrades 03-13-2018, 04:20 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
Thanks man .... It's actually at the point I can...

Thanks man .... It's actually at the point I can say it's a genuine 400whp daily now as the power/boost doesn't start dropping away till over 15psi so I know the engine is happy there.

Just did...
Forum: Series I Major Horsepower Upgrades 03-12-2018, 11:11 PM
Replies: 1
Views: 346
Posted By Brettus
yes n no Yes No next ....

yes n no

Yes

No

next ....
Forum: Series I Major Horsepower Upgrades 03-10-2018, 01:52 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
Here is my latest dyno . Taking into...

Here is my latest dyno . Taking into consideration that this dyno reads conservatively (akin to a Mustang in the US) I think the results are pretty good . Best peak number I've made so far and far...
Forum: Series I Major Horsepower Upgrades 02-27-2018, 01:13 PM
Replies: 43
Views: 1,254
Posted By Brettus
For the record ... I don't really "have a...

For the record ... I don't really "have a service". But PM me if you like and we can discuss if I can help or not .. cheers.
Forum: Series II Technical and Trouble shooting 02-25-2018, 05:15 PM
Replies: 8
Views: 451
Posted By Brettus
Bit late ...but here are the parameters I monitor...

Bit late ...but here are the parameters I monitor when tuning etc :


https://cimg9.ibsrv.net/gimg/www.rx8club.com-vbulletin/1249x103/80-parameters_15e023eee76b4e69207fca07efc4b584f65b8daf.jpg
Forum: Series I Major Horsepower Upgrades 02-22-2018, 01:47 PM
Replies: 43
Views: 1,254
Posted By Brettus
It will run ok at 12psi on 94 pump gas ... most...

It will run ok at 12psi on 94 pump gas ... most of the time . Then there is that time that it wont and ...boom . Anything over 10psi you really should be adding some ethanol as an octane booster....
Forum: Series I Major Horsepower Upgrades 02-21-2018, 06:20 PM
Replies: 43
Views: 1,254
Posted By Brettus
Yeah MM is a good tuner (almost as good as me ;)...

Yeah MM is a good tuner (almost as good as me ;) ) , just a bit of a 'special' person.
No not to optimistic on the mileage , but will depend on many factors like how you drive it and maintain it...
Forum: Series I Major Horsepower Upgrades 02-20-2018, 09:50 PM
Replies: 43
Views: 1,254
Posted By Brettus
I'm happy running mine on pump gas at 10psi but...

I'm happy running mine on pump gas at 10psi but it's a lot bigger than a Greddy . To run a Greddy up that high you should be using an octane enhancer . The Pettit is pretty kind on the engine at 8psi...
Forum: Series I Trouble Shooting 02-12-2018, 02:49 PM
Replies: 4
Views: 475
Posted By Brettus
Good work finding that ... would not have guessed...

Good work finding that ... would not have guessed it was that from the video .

Re the sensor : could it actually be a fault with the cat perhaps ?
Forum: New Member Forum 02-11-2018, 07:02 PM
Replies: 11
Views: 520
Posted By Brettus
Quoted for posterity ...........

Quoted for posterity ...........
Forum: Series II Forced Induction and Nitrous 02-11-2018, 05:00 PM
Replies: 35
Views: 2,618
Posted By Brettus
I wasn't trying to imply the dyno was faked in...

I wasn't trying to imply the dyno was faked in any way , seems totally legit to me.

It actually seems low if anything given all the information supplied :

1/Dynojet normally reads 10% higher...
Forum: Series I Major Horsepower Upgrades 02-04-2018, 01:28 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
They have the latest tech. available . Check it...

They have the latest tech. available . Check it out here, 2nd post down ATM :
...
Forum: Series I Major Horsepower Upgrades 02-03-2018, 07:46 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
New GTX compressor wheel being balanced : ...

New GTX compressor wheel being balanced :

https://cimg5.ibsrv.net/gimg/www.rx8club.com-vbulletin/419x589/80-untitled_4bd1ee07a05f4f7614635c9c9e91f2efe3553d7c.png
Forum: Series I Major Horsepower Upgrades 01-30-2018, 01:44 PM
Replies: 79
Views: 7,433
Posted By Brettus
E85 might be terrible but I've found my economy...

E85 might be terrible but I've found my economy with E30 is practically the same as straight petrol ...



I def. considered direct into LIM but gave up on the idea when I found an E85 pump...
Forum: Series I Major Horsepower Upgrades 01-29-2018, 01:04 PM
Replies: 79
Views: 7,433
Posted By Brettus
I actually gave up on W/M after getting some...

I actually gave up on W/M after getting some detonation with it fully operational and putting in around 350cc . I think the manifold is too long and curvaceous , which is leading to much of the spray...
Forum: Series I Major Horsepower Upgrades 01-13-2018, 02:03 PM
Replies: 179
Views: 22,546
Posted By Brettus
The turbo I had was an upgrade on the Greddy and...

The turbo I had was an upgrade on the Greddy and looking back I think it was on the cusp of being big enough to run with the aux. ports open for street duty but definitely too small for sustained...
Forum: Series II Forced Induction and Nitrous 01-12-2018, 02:20 PM
Replies: 35
Views: 2,618
Posted By Brettus
I wouldn't be surprised if they already blew the...

I wouldn't be surprised if they already blew the engine and the project has been canned.
Forum: RX-8 Discussion 01-01-2018, 02:24 PM
Replies: 29
Views: 2,487
Posted By Brettus
It all started when I noticed good economy at...

It all started when I noticed good economy at cruise from my boosted bridgeport engine. See this thread for the initial discussion: https://www.rx8club.com/series-i-tech-garage-22/egr-renesis-264156/...
Forum: RX-8 Discussion 01-01-2018, 02:38 AM
Replies: 29
Views: 2,487
Posted By Brettus
I filed a provisional patent-Renesis EGR stratification

As a spinoff to all the turbo development work I've been doing, I came across an Idea that I thought might be worthwhile to help with fuel saving.
The results were looking like it might be...
Forum: Series I Major Horsepower Upgrades 12-23-2017, 05:31 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
If you look at what Garrett did with the GT3584RS...

If you look at what Garrett did with the GT3584RS , this turbine should have very similar characteristics . Procharge are using it with great success on everything from 62 to 69mm . I'm the only...
Forum: Series I Major Horsepower Upgrades 12-09-2017, 02:46 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
Not the same turbo (Gt35 vs Td06) but the 9 blade...

Not the same turbo (Gt35 vs Td06) but the 9 blade wheels available for the greddy would IMO work better than the 11blade for the 60-1 upgrade . But those are the wheels that tend to fall apart...
Forum: Series I Major Horsepower Upgrades 12-09-2017, 12:21 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
No .............just referring to the higher flow...

No .............just referring to the higher flow you get as rpms increase. It seems about the same as the stock wheel at low rpm flow but works better than stock once rpms approach 4000.
Forum: Series I Major Horsepower Upgrades 12-07-2017, 08:42 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
So ..... although 'boost threashhold ' is about...

So ..... although 'boost threashhold ' is about the same as previous setups , respose/lag has definitely been reduced . This setup is now excellent for a street car . Anything above 4000rpm and lag...
Forum: Series I Major Horsepower Upgrades 12-05-2017, 06:40 PM
Replies: 1,688
Views: 141,263
Posted By Brettus
So I have a bit of an idea on what this setup is...

So I have a bit of an idea on what this setup is going to be like now :
Spoolup : looks pretty much identical to what I'm used to seeing . This is with the hi flow turbine that the sellers touted as...
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