[ZTZ1010]

Hey Guys -

Hope everyone is having a Merry Christmas and all of your car dreams/ mod wishes have come true!

Anyways, I had the car dyno'd locally the other day just to get an idea of what kind of power I was putting down, and ended up being VERY disappointed with the numbers. Just wanted to see if anyone with more experience or better knowledge could point out any explanation for less than optimum performance/output. I'm a noob at the tuning scene!


I also understand my numbers are uncorrected. I'm posting the image simply so others can get an idea of the curves, so please don't flame me for uncorrected values.

My Performance Setup currently includes the following:

JB3 2.0 PNP (Newest Firmware/Interface) - Run on Map 7
Riss Racing Cattless Downpipes W/ Secondary Cats deleted
Injen Dual Cone Intake
ETS Front Mount Intercooler
Forge Diverter Valves/ STETT Charge Pipe

For weight purposes, the car was also on the dyno with OEM style 193M M-Sport rims with Pirelli Winter Tires.

I've attached the graph below, and the tech working at the shop I used to dyno pointed out that my Air/Fuel ratio seems to be strange, and the car doesn't seem to be getting enough fuel(??) which he said could explain lower whp numbers.

any ideas as to what could have caused these values or what I can do to correct them? I was hoping to be far closer to 400whp without meth...

Zach

[kryzeofkrayzie]

What Octane were you running? Perhaps map 7 is too much of a map for the octane?

I run I very similar setup to what you have and got better numbers, but my initial #'s were pretty bad as well and it was because stock dme was pulling timing according to t ( I was running a couple maps too high for the crap octane we get in California) But keep in mind this was like 1.5 yrs ago w/ the older jb3 1.3 or 1.4 (I have 2.0 sitting here but not installed).

Oh and my car is a 6spd mt as well with injen cai, ar catless dps, ets intercooler, jb3 and the only power adder difference hks exhaust. (I got 382/391 std corrected)

[MKR_DmD]

Do you have a before run? An after run is pointless without a before run. How do you know what you gained without a dyno before.

As far as afr's. The do seem high but I am coming from the Evo world were you run 12 and 10 at redline. I have no clue about bmw.

[ZTZ1010]

Originally Posted by kryzeofkrayzie

What Octane were you running? Perhaps map 7 is too much of a map for the octane?

I run I very similar setup to what you have and got better numbers, but my initial #'s were pretty bad as well and it was because stock dme was pulling timing according to t ( I was running a couple maps too high for the crap octane we get in California) But keep in mind this was like 1.5 yrs ago w/ the older jb3 1.3 or 1.4 (I have 2.0 sitting here but not installed).

Oh and my car is a 6spd mt as well with injen cai, ar catless dps, ets intercooler, jb3 and the only power adder difference hks exhaust. (I got 382/391 std corrected)

Sorry I should have added that my car is indeed a 6MT also. It has only ever seen Shell 93 octane, which I thought was fine to run with map 7 in addition my bolt ons?

I'm wondering if it has anything to do with my secondary cats being removed?

Originally Posted by DrivinMissDaisy

Do you have a before run? An after run is pointless without a before run. How do you know what you gained without a dyno before.

As far as afr's. The do seem high but I am coming from the Evo world were you run 12 and 10 at redline. I have no clue about bmw.

I don't have a before run... I just expected with bolt ons that estimate 40-50 whp + the JB3 I'd be well above 360...

[Penn999]

Originally Posted by ZTZ1010

Sorry I should have added that my car is indeed a 6MT also. It has only ever seen Shell 93 octane, which I thought was fine to run with map 7 in addition my bolt ons?

I'm wondering if it has anything to do with my secondary cats being removed?




I don't have a before run... I just expected with bolt ons that estimate 40-50 whp + the JB3 I'd be well above 360...

You need to be running higher octane than 93 on map 7. Thats your problem

[ZTZ1010]

Originally Posted by Penn999

You need to be running higher octane than 93 on map 7. Thats your problem

BMS and the map guide claim you may use 93 octane or higher.. I didn't think ONLY running 93 would cause an overall decrease in power?

[Bagelfast]

To really get an idea, you need a baseline dyno... you can have well over 100WHP gain here, if a stock 335i is putting down 260WHP on this dynojet which i have seen before.

Dont be disappointed, variances between dynos is common. FANS and air play a CRITICAL role on making power on the dyno aswell. I have seen 20WHP variances on the same dyno with different fans setup.

But without a baseline dyno, cant really say anything.

[kryzeofkrayzie]

Originally Posted by ZTZ1010

Sorry I should have added that my car is indeed a 6MT also. It has only ever seen Shell 93 octane, which I thought was fine to run with map 7 in addition my bolt ons?

I'm wondering if it has anything to do with my secondary cats being removed?

Nope. My hks exhaust setup has secondary cats removed as well.

[ZTZ1010]

Originally Posted by 1LUMI335

To really get an idea, you need a baseline dyno... you can have well over 100WHP gain here, if a stock 335i is putting down 260WHP on this dynojet which i have seen before.

Dont be disappointed, variances between dynos is common. FANS and air play a CRITICAL role on making power on the dyno aswell. I have seen 20WHP variances on the same dyno with different fans setup.

But without a baseline dyno, cant really say anything.

I think this has a lot to do with it. Not knowing where I stood beforehand may account for why I'm thinking there isn't a large enough gain.

The only issue I have with that a friend of mine (DefactoM6) went to the same shop same dyno with a very similar setup, and made 402rw (corrected) with:

Procede V4, 11-4 Maps, Boost Setpoint: 15.5 PSI
Macht Schnell 3" Catless Downpipes
CP-E Downpipe-back Catless Exhaust
Homemade DCI

so I'm wondering why I'm so much lower even with a FMIC...

Originally Posted by kryzeofkrayzie

Nope. My hks exhaust setup has secondary cats removed as well.

hmm this seems to be the consensus that it has nothing to do with it




Terry says low temps (30ish degrees), winter tires, and JB3 boost readjustment for cold weather definitely impacted the overall number. Going to wait a few months, and hit the dyno with JB4 and summer tires.

[Penn999]

Originally Posted by ZTZ1010

BMS and the map guide claim you may use 93 octane or higher.. I didn't think ONLY running 93 would cause an overall decrease in power?

"The official recommendation is downpipes and 93 octane.

To the guy running map7 stock and on 91 octane (you're crazy lol) Its not about codes but running a map that is suited for your car. These cars are pretty resilient but you are not driving a real map7. YOu are fighting the car and the car is fighting back. You would be surprised you would probably make more power on map5 or map3 and have a smoother drive. Its not all about the map number Grab a BT tool and log your timing.... Might set you straight.

Mike
_________________"

http://www.1addicts.com/forums/showthread.php?t=418555

I think you should stay at map 5 until you are running meth or higher octane, thats just what I have heard from different people experiencing the same problem you had. Try map 5 on the dyno and see what happens. I know mike says you can run map 7 safely on 93 but try map 5. I owned the jb3 before and I had/have full bolt ons and never even touched map 7.

[ZTZ1010]

Originally Posted by Penn999

"The official recommendation is downpipes and 93 octane.

To the guy running map7 stock and on 91 octane (you're crazy lol) Its not about codes but running a map that is suited for your car. These cars are pretty resilient but you are not driving a real map7. YOu are fighting the car and the car is fighting back. You would be surprised you would probably make more power on map5 or map3 and have a smoother drive. Its not all about the map number Grab a BT tool and log your timing.... Might set you straight.

Mike
_________________"

http://www.1addicts.com/forums/showthread.php?t=418555

I think you should stay at map 5 until you are running meth or higher octane, thats just what I have heard from different people experiencing the same problem you had. Try map 5 on the dyno and see what happens. I know mike says you can run map 7 safely on 93 but try map 5. I owned the jb3 before and I had/have full bolt ons and never even touched map 7.

I'm running downpipes and 93 octane. but I agree that a different map without higher octane may be beneficial.

I think I'm going to take some time this week and run a few timing logs between maps 5 and 7 to determine which is really the best... unfortunately gonna have to wait a few days as they're predicting 1-2 feet of snow for the tristate area tomorrow.

I've also got a JB4 Alpha unit waiting for me in the mail easiest way to say problem solved!