What octane gas are you using?
Do you have access to E85?
I am running 93 and it looks like there are two e85 places about 10 mins from my house.
Yeah i just figured my is20 would be pushing higher boost with no corrections.
I have one a page or two back as wellLogs?
It's in post 2432. Says log
I figured the blue link would give it awayWay to hide it. Haha. That's a lot of boost for a JB4/93 Oct/IS20 car. You can't compare boost values between different turbos. IS20 people should not be using IS12 numbers, etc.
It can with better gas, especially at higher RPMs but it's pressure vs timing in the midrange and the motor doesn't care what turbo you use to make that pressure. 1.8s run more timing than the GTI motor which is setup for more boost. I think your log is fine even though it touches 2* pull on one cylinder. ign 1 never crashes but ya, you'll need more octane to fully benefit from the is20 and JB4 on this motor. Zumble is stacking and has a better suited is20 ecu tune plus the jb4. Probably something to consider once you've put forth the effort and expense of swapping turbos.I am running 93 and it looks like there are two e85 places about 10 mins from my house.
Yeah i just figured my is20 would be pushing higher boost with no corrections.
So I took your advice and got an apr is20 tune. Holy Sheesh this is a different car. I am holding 20+ PSI from 3k to redline with less corrections than the JB4.It can with better gas, especially at higher RPMs but it's pressure vs timing in the midrange and the motor doesn't care what turbo you use to make that pressure. 1.8s run more timing than the GTI motor which is setup for more boost. I think your log is fine even though it touches 2* pull on one cylinder. ign 1 never crashes but ya, you'll need more octane to fully benefit from the is20 and JB4 on this motor. Zumble is stacking and has a better suited is20 ecu tune plus the jb4. Probably something to consider once you've put forth the effort and expense of swapping turbos.
So I took your advice and got an apr is20 tune. Holy Sheesh this is a different car. I am holding 20+ PSI from 3k to redline with less corrections than the JB4.
The first run I hit my boost safety halfway through so it cut my boost to 15 https://datazap.me/u/mmxmm24/apr-is20-run-1?log=0&data=1-3-4-11-14-18-25-26-27-28
Second run wasn't quite a full run to redline but it was close. https://datazap.me/u/mmxmm24/apr-is20-tune-run-2?log=0&data=1-3-4-11-14-18-25-26-27-28
yeah that's the next question is if I stack or not. Likely going to resell my jb4 unless I go real crazy with itLooks good. One drawback is you won't get as much benefit from Ethanol when using an APR flash. On 93 it should be really good though.
That stimulus check was burning a hole in my pocket . Luckily the APR Dealer near me had some availability todayThat was fast! Credit Zumble, not me. Just made a lot of sense with the blower swap. I'm super happy with the JB4 on it's own with my stock 1.8.