[Cory S]

Originally Posted by DrRobert

Gonna retune on 96 after finishing 91 retune.

That should be quite a jump. How much boost is commanded to get 380 on 91 octane? How much timing above 3500rpm? How's the AFR? I find 12.1-12.2:1 works best above 3900rpm.

[JETmn]

Originally Posted by Cory S

368 isn't bad on 91. Probably a little more room left for 93 if you can get it, or run a blend of Torco/race fuel.

"A little more room left for 93"? We have seen over 450whp on 93. I bet he can get over 400whp on a DJ once the tune is done even on 91.

[Cory S]

Originally Posted by JETmn

"A little more room left for 93"? We have seen over 450whp on 93. I bet he can get over 400whp on a DJ once the tune is done even on 91.

I agree. I was being conservative without blatantly shooting out numbers

[DrRobert]

For 368 WHP on 91 octane:
Max boost is 19.8 at 4800 RPM, tapers to 17.5 at redline
Timing ranges from 0 to -3.3 above 3500
AFR 12.2 from 4900-6100 RPM, at 3900 it is 12.9

[Cory S]

Looks good. Once you can get into the 4-7* timing window, your setup will probably pick up a solid 25-45whp... On 98-100 octane, you can run about 8-10* of timing and pick up another 10whp or so. Straight 102 unleaded oxygenated (like MS109) 11-13* of timing, and even more HP/TQ.

[DrRobert]

Thanks Cory. I can get VP 101 unleaded/oxygenated here in CA, I am mixing it 50:50 with 91 to get 96. It is expensive though, not sure whether I'll go for a 101 tune after dialing in the 96 tune for the new HFC...

[Cory S]

Keep us posted!

[JETmn]

Originally Posted by DrRobert

For 368 WHP on 91 octane:
Max boost is 19.8 at 4800 RPM, tapers to 17.5 at redline
Timing ranges from 0 to -3.3 above 3500
AFR 12.2 from 4900-6100 RPM, at 3900 it is 12.9

Something definitely sounds off. What are your mods again? I went back the last 4 pages and couldn't find the list. I would expect about 50whp more if you are FBO with the stage 2 on 91. It sounds like you are stock DP, which is a restriction even on the stock turbo. Maybe it is a huge restriction on a bigger turbo?

[Cory S]

Originally Posted by JETmn

Something definitely sounds off. What are your mods again? I went back the last 4 pages and couldn't find the list. I would expect about 50whp more if you are FBO with the stage 2 on 91. It sounds like you are stock DP, which is a restriction even on the stock turbo. Maybe it is a huge restriction on a bigger turbo?

IIRC, he has a high flow catted D/P. His low commanded timing I imagine is whats holding the power way back.

[DrRobert]

Originally Posted by JETmn

Something definitely sounds off. What are your mods again? I went back the last 4 pages and couldn't find the list. I would expect about 50whp more if you are FBO with the stage 2 on 91. It sounds like you are stock DP, which is a restriction even on the stock turbo. Maybe it is a huge restriction on a bigger turbo?

Mods are listed in my garage list, but the short list is:
FMIC
CP
PS2 turbo
DV+
HJS high flow cat in gutted OEM DP
Stock exhaust
Flash only tune Cobb/PTF

[DrRobert]

Here is a log from the last dyno run that showed 368 HP on crap CA 91 octane gas at higher RPM. There was a big dip in the torque curve down low that corresponded to the dip in the boost curve you can see on the graph:
http://datazap.me/u/drrobert/ptf-pur...og=0&data=4-17

Dzenno has since fixed the boost curve with a newer map he made me after that dyno run. Here is a log from the current map:
http://datazap.me/u/drrobert/ptf-pur...og=0&data=4-17

I will be repeating the dyno on this new map and hope to do some fine tuning on the dyno remotely with Dzenno in the next couple of weeks. After that we will retune for 96 octane with the new HFC.

[Newguy123]

i parted out my car a little while back b/c of a bad ticket i received...i left the PS2 turbo on my car and drove it stock for quite some time and recently came up on a good deal for a chargepipe and ended up buying my old jb4 back from a friend i sold it to who traded his car in. so the only mods on my car are JB4 with a "ramp up" boost curve charge pipe and PS2 turbo ALL ELSE STOCK! im running no more then 15.5 psi at redline with e30 in the tank and my car is still a fucking rocket. no misfires dct isnt slipping(i will buy a cobb for BEF if it starts) i posted a speedo video on flat ground a few nights ago on the 135i facebook page if anyone wants to check it out. 30-120 mph its incredible how fast it is with these simple mods and not even 16psi peak if i had to guess its making over 400whp at redline. im running the newest 5.10 hex firmware on jb4 with the 6 cyl logging and i had a few weird dips in timing where all cylinders went to 0 then back up during a 3rd gear log but otherwise all looks pretty damn good. i dont think the stock dp is a huge restriction on these cars for lower boost runs

[pipsindamix]

Originally Posted by Newguy123

i parted out my car a little while back b/c of a bad ticket i received...i left the PS2 turbo on my car and drove it stock for quite some time and recently came up on a good deal for a chargepipe and ended up buying my old jb4 back from a friend i sold it to who traded his car in. so the only mods on my car are JB4 with a "ramp up" boost curve charge pipe and PS2 turbo ALL ELSE STOCK! im running no more then 15.5 psi at redline with e30 in the tank and my car is still a fucking rocket. no misfires dct isnt slipping(i will buy a cobb for BEF if it starts) i posted a speedo video on flat ground a few nights ago on the 135i facebook page if anyone wants to check it out. 30-120 mph its incredible how fast it is with these simple mods and not even 16psi peak if i had to guess its making over 400whp at redline. im running the newest 5.10 hex firmware on jb4 with the 6 cyl logging and i had a few weird dips in timing where all cylinders went to 0 then back up during a 3rd gear log but otherwise all looks pretty damn good. i dont think the stock dp is a huge restriction on these cars for lower boost runs

i was thinking of the same simple setup... JB4+Cp+Pure stage 2.. No hassle with a loud/smelly DP or intercooler or anything. Ramp up boost curve on jb4, does that mean custom map 6 or what?

[houtan]

Originally Posted by pipsindamix

i was thinking of the same simple setup... JB4+Cp+Pure stage 2.. No hassle with a loud/smelly DP or intercooler or anything. Ramp up boost curve on jb4, does that mean custom map 6 or what?

yes, Map 6. Since his car is DCT and he is running the stock flash, map 6 allows a slower ramp up of boost so there isn't excessive load on the DCT in the lower RPM, which will prevent the dct from slipping in the low end. If you are manual or auto, you wouldn't have to worry about this.

With the BEF, he could have the boost hit as fast as possible and the dct would hold.

[Newguy123]

Originally Posted by houtan

yes, Map 6. Since his car is DCT and he is running the stock flash, map 6 allows a slower ramp up of boost so there isn't excessive load on the DCT in the lower RPM, which will prevent the dct from slipping in the low end. If you are manual or auto, you wouldn't have to worry about this.

With the BEF, he could have the boost hit as fast as possible and the dct would hold.

Houtan just did PPK on my car and reverted my Ecu version back to 98G0B from 98G1B (had a dealer visit a few months back and they updated it without me knowing) gave me a great price and was very familiar with the process. Soo happy with the Ppk and the burbles/snap crackles and pops on decel! Even with the stock exhaust it sounds catless when it does a loud one....thanks man!

He also got to ride in my car for a couple street pulls. We did my normal map6 15.5psi at redline vs map7. What did you think houtan

[houtan]

Originally Posted by Newguy123

Houtan just did PPK on my car and reverted my Ecu version back to 98G0B from 98G1B (had a dealer visit a few months back and they updated it without me knowing) gave me a great price and was very familiar with the process. Soo happy with the Ppk and the burbles/snap crackles and pops on decel! Even with the stock exhaust it sounds catless when it does a loud one....thanks man!

He also got to ride in my car for a couple street pulls. We did my normal map6 15.5psi at redline vs map7. What did you think houtan

Glad you're enjoying the ppk brother.

Car rips dood! It's was really smooth and fast. I was really surprised such a simple set up and conservative boost curve could result in a really fast car. Awesome.

[Hit Redline]

Very informative thread, thanks guys.

Recently went PS2 with TBI and dealing with the misfire issues.

I was running fuel-it TBI BEF and have since switched to BMS big turbo BEF, disconnected TBI and dropped to E20. So far running better.

I might try increasing E content and connecting the TBI with the BMS BEF. It just gets old not having the car run right and hoping it doesn't limp mode when getting on it.

[houtan]

Originally Posted by Hit Redline

Very informative thread, thanks guys.

Recently went PS2 with TBI and dealing with the misfire issues.

I was running fuel-it TBI BEF and have since switched to BMS big turbo BEF, disconnected TBI and dropped to E20. So far running better.

I might try increasing E content and connecting the TBI with the BMS BEF. It just gets old not having the car run right and hoping it doesn't limp mode when getting on it.

At what boost level are you getting misfires? There are other people that have run into this issue. Maybe they can help.

[Cory S]

Originally Posted by houtan

At what boost level are you getting misfires? There are other people that have run into this issue. Maybe they can help.

I am one of them... Currently working on it. What's needed is 95770 or N20 plugs @ .018-.019", strong fresh coil packs (under 25,000 miles), an AFR no richer than 12.6:1 above 5000rpm , and a heck of a lot of HOPE.....

[Turbod]

Originally Posted by Newguy123

i parted out my car a little while back b/c of a bad ticket i received...i left the PS2 turbo on my car and drove it stock for quite some time and recently came up on a good deal for a chargepipe and ended up buying my old jb4 back from a friend i sold it to who traded his car in. so the only mods on my car are JB4 with a "ramp up" boost curve charge pipe and PS2 turbo ALL ELSE STOCK! im running no more then 15.5 psi at redline with e30 in the tank and my car is still a fucking rocket. no misfires dct isnt slipping(i will buy a cobb for BEF if it starts) i posted a speedo video on flat ground a few nights ago on the 135i facebook page if anyone wants to check it out. 30-120 mph its incredible how fast it is with these simple mods and not even 16psi peak if i had to guess its making over 400whp at redline. im running the newest 5.10 hex firmware on jb4 with the 6 cyl logging and i had a few weird dips in timing where all cylinders went to 0 then back up during a 3rd gear log but otherwise all looks pretty damn good. i dont think the stock dp is a huge restriction on these cars for lower boost runs

I was wondering why you sold most of your parts. I was pretty happy when I ran map 2 with the new turbo. When I turned the boost up to 20 I was a little shocked. The car is walking a little bit which can be scary at higher speeds.

[Rob_BMW_PNW]

Im about to order my PS2 along with all of the upgrades. going to get a Protune via Cobb. Hopefully I dont run into crazy issues >.>