Stock 1.6 with 2860RS at 12psi
#22
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Honestly, his numbers are what I'd expect with that turbo on a 1.6L on a roller dyno... I see nothing wrong. also I thought you were running like 15psi and had a major boost spike during spool...
add a mere 10% to his numbers and you got 247/216 for a rough dynojet comparison.
add a mere 10% to his numbers and you got 247/216 for a rough dynojet comparison.
#23
Elite Member
Thread Starter
iTrader: (8)
Join Date: Dec 2008
Location: Kingston, Ontario
Posts: 2,910
Total Cats: 51
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Buffon, since there are so many correction maps, the afr fluctuates quite a bit depending on so much.
if im on a level, no throttle inputs, in 5th gear on 3.6 rear end just cruising... it will vary between 15-16.5:1
The main thing is that i cruise at 70mph (110km) at ~3k now vs the 4k with stock 4.3 as well has having VTPS and a tune very specific to my car...
This could also attest to the quality of the injector dynamics injectors that i picked up from 949 racing.
if im on a level, no throttle inputs, in 5th gear on 3.6 rear end just cruising... it will vary between 15-16.5:1
The main thing is that i cruise at 70mph (110km) at ~3k now vs the 4k with stock 4.3 as well has having VTPS and a tune very specific to my car...
This could also attest to the quality of the injector dynamics injectors that i picked up from 949 racing.
#25
Elite Member
Thread Starter
iTrader: (8)
Join Date: Dec 2008
Location: Kingston, Ontario
Posts: 2,910
Total Cats: 51
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
This is visually observed over 1 day. I will datalog some driving in the near future, as i need to get my boost control running anyways, and then i can see what the ems is recording which is more accurate than me reading my innovate guage.
#26
Boost Czar
![](/mt2011/images_td/ranks/supporter1.gif)
![](/mt2011/images_td/ranks/admin.png)
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,607
Total Cats: 4,102
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
No it was at 12psi trailing to 10psi cause the stock greddy wastegate wasn't working. Then I upgraded it to a t28 wategate and set the MBC to 14psi and got a steady 14psi all the way to redline but I haven't dyno that yet. The boost spike your talking about is my current issue with the new IC I installed.
#29
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I think his numbers are good. It took 16 psi from my 2871 to make 242/224 on a Mustang dyno.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
Last edited by levnubhin; 05-03-2010 at 02:08 PM.
#31
Elite Member
Thread Starter
iTrader: (8)
Join Date: Dec 2008
Location: Kingston, Ontario
Posts: 2,910
Total Cats: 51
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
That makes me feel better about it.
I want to **** around with boost control still to get it up there and steady.
If i can get that working, I will make the 2 hour trip to toronto for the M-tuned dyno day and run it on their mustang for number comparisons.
I want to **** around with boost control still to get it up there and steady.
If i can get that working, I will make the 2 hour trip to toronto for the M-tuned dyno day and run it on their mustang for number comparisons.
#34
Elite Member
Thread Starter
iTrader: (8)
Join Date: Dec 2008
Location: Kingston, Ontario
Posts: 2,910
Total Cats: 51
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
![Name: overlay.jpg
Views: 1086
Size: 88.4 KB](https://www.miataturbo.net/attachments/dynos-timesheets-21/197099d1501235749-stock-1-6-2860rs-12psi-overlay.jpg)
got bored... overlayed my graphs that i have.
low lines are 10psi
high are 12psi.
i never drove the car at 12psi. :(
When i get the new turbo i will get the same charts with the same turbo, only difference will be the TiAL exhaust housing... i may tune up to 14psi too...
This time i will have cometic head gasket and ARP head studs since my head gasket is leaking like a seive.
EDIT:
Does anyone have any insight into why power was falling off at 12psi besides the possible boost drop from not running a real boost controller?(we used a crimped metal T since EBC wasnt working and i didnt have a manual)
#36
Tour de Franzia
![](/mt2011/images_td/ranks/supporter1.gif)
iTrader: (6)
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
The gt2860rs needs 15psi or so to "work." I don't know why but on my old begi stuff and my absurdflow stuff my car made **** output at 11-13psi...then at 15psi its like another world. I'm sure that my lowered compression has something to do with it too.
from the old begi stuff...
12psi:
![](http://i48.tinypic.com/25jza88.jpg)
15psi:
from the old begi stuff...
12psi:
![](http://i48.tinypic.com/25jza88.jpg)
15psi:
![](http://i49.tinypic.com/2d134w0.jpg)
#39
Elite Member
Thread Starter
iTrader: (8)
Join Date: Dec 2008
Location: Kingston, Ontario
Posts: 2,910
Total Cats: 51
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I was creeping the dyno section today and i noticed this in your dyno thread.
being on a completely stock engine im weary of high boost... but im going to add a knock sensor to the EMS and watch that.
My tuner told me this at the tune day. he said another psi or two will liven this setup up for real.
I was getting scared that day because the higher we boosted it, the more oil i was leaking...
I hope to get some solid numbers down and pump 14psi into the engine with it being happy.
Im also going to try to tune a bit more of my 2000-3000rpm cells to get better in town drivability... the 1.6 fidanza seems to make my car not like holding between on/off throttle.
being on a completely stock engine im weary of high boost... but im going to add a knock sensor to the EMS and watch that.
My tuner told me this at the tune day. he said another psi or two will liven this setup up for real.
I was getting scared that day because the higher we boosted it, the more oil i was leaking...
I hope to get some solid numbers down and pump 14psi into the engine with it being happy.
Im also going to try to tune a bit more of my 2000-3000rpm cells to get better in town drivability... the 1.6 fidanza seems to make my car not like holding between on/off throttle.