Silvia Club of NSW :: View topic - UPDATE:S15 back from UNIGROUP 281rwkw@24psi (E85)Trust T518z

Congratulations mate!

Were the E85 and 98RON runs done on the same day, or is the 98 tune from a while back? D'you think you'll stick with the E85 tune for the small gain?

Is that power level approaching the limit for a standard internalled SR? Did Yavuz have any comment on that?

Thanks marty!

What happened to the sss?

E85 only yields good results if you are a long way from the point that extra timing doesn't make gains. If you are almost there with 98 octane then E85 won't do a lot for you. That's what he's talking about.

If you had a bigger turbo running 30psi and no intercooler it'd be a different story as that combo would take advantage of the fuel.

Aym23q wrote:

Thanks marty!

What happened to the sss?

its got an FJ, nuff said :lol:

fly510 wrote:

Aym23q wrote:

Thanks marty!

What happened to the sss?

its got an FJ, nuff said :lol:

LOL true, possibly chocked up behind the back wheel of the car to stop the car from rolling down his driveway :lol:

(I can see a "datnet" style SR vs FJ thread spilling over to silviaNSW and second now

)

Its unnecessary. You could get that power reading much more efficiently with out more than doubling the standard boost level

Im no mechanic... but i wouldnt be running 17psi through a stock motor with massive F*** off injectors.... Its unnecessary. You could get that power reading much more efficiently with out more than doubling the standard boost level.... And anyone that tells you that it doesnt decrease the life span of your motor is probably trying to sell you something... it may not blow up or anything straight away.... but i dont think its exactly good for it either... but provided the tune is good and it doesnt ping then it should be fine...

....isnt the air fuel ratio supposed to be consistent? :S Looks a bit dodge for a professional tune.... Looks similar to my untuned s14 when it was running 11psi....

Im no mechanic... but i wouldnt be running 17psi through a stock motor with massive F*** off injectors.... Its unnecessary. You could get that power reading much more efficiently with out more than doubling the standard boost level.... And anyone that tells you that it doesnt decrease the life span of your motor is probably trying to sell you something... it may not blow up or anything straight away.... but i dont think its exactly good for it either... but provided the tune is good and it doesnt ping then it should be fine....

But hey... who am i to know.... its just my opinion....

Author:	Aym23q [ Tue May 12, 2009 6:33 pm ]
Post subject:	UPDATE:S15 back from UNIGROUP 281rwkw@24psi (E85)Trust T518z
Just got my S15 back from Unigroup, very happy. Mods: T518z 8cm standard manifold BC stage 2 cams with VCT and BC valve springs/retainers 740CC Nismo injectors Z32 AFM Nismo Pump Nistune ECU standard internals Dyno sheet below shows 2 maps that i have Blue graph = E85 PULP Red graph = 98 PULP Yavuz and I are both very suprised that E85 only yielded 7-8rwkw more. Yavuz reckons the turbo has reached close its max flow with the setup on E85 and that the injectors were running around 90% so he didnt try and squeeze any more out of it. However he said that the E85 result is pretty good, however 98 PULP result is more than he expected, therefore "narrowing" the gap between both fuels. The car absolutelty screams. Only one small hitch. Yavuz has set an AFM airflow limit in the map. Its there to protect the engine however IMO i think it is set too low as on a cold night, as soon as the car power starts to ramp up, before it even hits max boost. Yavuz has warned me however i just want it removed as its too intrusive i have to wind the boost back 4psi from whats its safely tuned for just to stop it from cutting out. Anyway discuss!

Author:	Leif [ Tue May 12, 2009 6:49 pm ]
Post subject:
Congratulations mate! Were the E85 and 98RON runs done on the same day, or is the 98 tune from a while back? D'you think you'll stick with the E85 tune for the small gain? Is that power level approaching the limit for a standard internalled SR? Did Yavuz have any comment on that?

Author:	Aym23q [ Tue May 12, 2009 7:01 pm ]
Post subject:
Leif wrote: Congratulations mate! Were the E85 and 98RON runs done on the same day, or is the 98 tune from a while back? D'you think you'll stick with the E85 tune for the small gain? Is that power level approaching the limit for a standard internalled SR? Did Yavuz have any comment on that? Thanks mate Yea i believe they were on the same day, but i might confirm that with Yavuz. Well he has already tuned for E85 as well so i have 2 maps there might as well use it. Even if the gain is minimal it would be good to use as it suppresses knock like no tommorow, very knock resistant therefore good for the track, even if the boost was knocked up a few PSI it should still be safe, to be honest i think yavuz was very conservative with the E85 tune, i think he was worried bout the injectors or something not sure.. he said he can get more out of them but "its not worth it" dunno what that means lol maybe tuning time vs gain wasnt worth it, as the boost controller didnt like holding much more than 22psi and was a bit erratic

Author:	Godzilladat [ Tue May 12, 2009 9:41 pm ]
Post subject:
Good work Aym, that's some good results. Looking forward to getting the coin together to get my car back out there.

Author:	Aym23q [ Tue May 12, 2009 10:47 pm ]
Post subject:
Thanks marty! What happened to the sss?

Silvia Club of NSW https://forum.silviansw.com/

UPDATE:S15 back from UNIGROUP 281rwkw@24psi (E85)Trust T518z https://forum.silviansw.com/viewtopic.php?f=12&t=33287	Page 1 of 2

Author:	Aym23q [ Wed May 13, 2009 7:30 pm ]
Post subject:
Torque vs AFR Peak torque Smack bang in the middle right at 5000rpm. Nice n meaty

Author:	badhairdave [ Wed May 13, 2009 9:00 pm ]
Post subject:
E85 only yields good results if you are a long way from the point that extra timing doesn't make gains. If you are almost there with 98 octane then E85 won't do a lot for you. That's what he's talking about. If you had a bigger turbo running 30psi and no intercooler it'd be a different story as that combo would take advantage of the fuel.

Author:	fly510 [ Wed May 13, 2009 9:34 pm ]
Post subject:
Aym23q wrote: Thanks marty! What happened to the sss? its got an FJ, nuff said

Author:	Aym23q [ Thu May 14, 2009 12:52 am ]
Post subject:
badhairdave wrote: E85 only yields good results if you are a long way from the point that extra timing doesn't make gains. If you are almost there with 98 octane then E85 won't do a lot for you. That's what he's talking about. If you had a bigger turbo running 30psi and no intercooler it'd be a different story as that combo would take advantage of the fuel. hmm yes i get ya, however if timing couldnt do much, id think that pushing bit more boost could safely give you bigger gains? ie no knock = "safe" ??

Author:	Aym23q [ Thu May 14, 2009 12:55 am ]
Post subject:
fly510 wrote: Aym23q wrote: Thanks marty! What happened to the sss? its got an FJ, nuff said LOL true, possibly chocked up behind the back wheel of the car to stop the car from rolling down his driveway (I can see a "datnet" style SR vs FJ thread spilling over to silviaNSW and second now )

Author:	DR1600 [ Thu May 14, 2009 8:34 am ]
Post subject:
Aym23q wrote: fly510 wrote: Aym23q wrote: Thanks marty! What happened to the sss? its got an FJ, nuff said LOL true, possibly chocked up behind the back wheel of the car to stop the car from rolling down his driveway (I can see a "datnet" style SR vs FJ thread spilling over to silviaNSW and second now ) not another one we always know who wins that argument... SR!

Author:	Lisa Michelle [ Thu May 14, 2009 8:51 pm ]
Post subject:
....isnt the air fuel ratio supposed to be consistent? :S Looks a bit dodge for a professional tune.... Looks similar to my untuned s14 when it was running 11psi.... Im no mechanic... but i wouldnt be running 17psi through a stock motor with massive F*** off injectors.... Its unnecessary. You could get that power reading much more efficiently with out more than doubling the standard boost level.... And anyone that tells you that it doesnt decrease the life span of your motor is probably trying to sell you something... it may not blow up or anything straight away.... but i dont think its exactly good for it either... but provided the tune is good and it doesnt ping then it should be fine.... But hey... who am i to know.... its just my opinion....

Author:	too_much_boost [ Thu May 14, 2009 9:29 pm ]
Post subject:
That air fuel ratio is bang on perfect for an SR20DET. Alot of tuners waste time trying to get the air fuel ratio to be a certain figure, whereas what they really should be doing is giving the engine the fuel it wants at given points in the load map. 17psi through 740cc injectors (actually he is running 20psi) on a stock motor will surely decrease it's lifespan, but things wear out at that boost level just as fast on a built motor as they do on a standard motor. The only real difference is that a built motor has less chance of breaking. Lisa Michelle wrote: Its unnecessary. You could get that power reading much more efficiently with out more than doubling the standard boost level I'd like to know what magical method you use to do this. I can't think of many other turbos that will make nearly 270rwkw and still hit full boost well under 4000rpm (not taking into account happy dyno figures) Remember that this forum is full of people that modify cars. If we were worried about wearing out engines out a little bit faster, then we wouldn't be driving the cars that we do, nor taking them to the racetrack.

Author:	JayS14 [ Thu May 14, 2009 9:30 pm ]
Post subject:
Lisa Michelle wrote: Im no mechanic... but i wouldnt be running 17psi through a stock motor with massive F*** off injectors.... Its unnecessary. You could get that power reading much more efficiently with out more than doubling the standard boost level.... And anyone that tells you that it doesnt decrease the life span of your motor is probably trying to sell you something... it may not blow up or anything straight away.... but i dont think its exactly good for it either... but provided the tune is good and it doesnt ping then it should be fine... How are you going to get the same power with less boost and smaller injecters? Cams arnt going to do it... And btw i ran 17 psi through a stock bottem end for about 2 years...

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Author:	badhairdave [ Thu May 14, 2009 9:32 pm ]
Post subject:
Lisa Michelle wrote: ....isnt the air fuel ratio supposed to be consistent? :S Looks a bit dodge for a professional tune.... Looks similar to my untuned s14 when it was running 11psi.... Im no mechanic... but i wouldnt be running 17psi through a stock motor with massive F*** off injectors.... Its unnecessary. You could get that power reading much more efficiently with out more than doubling the standard boost level.... And anyone that tells you that it doesnt decrease the life span of your motor is probably trying to sell you something... it may not blow up or anything straight away.... but i dont think its exactly good for it either... but provided the tune is good and it doesnt ping then it should be fine.... But hey... who am i to know.... its just my opinion.... you should have stopped at "....", but its just my opinion...