[redefined]

Went last week for a baseline on my new (to me) e92. Thought it was some decent numbers with 284/305 in 96deg heat.



Then today I installed my Cobb AP with Stage 1 Aggressive 4.01 tune. I did a street 2nd gear pull and logged it (see attached) and then hit the dyno tonight and got another log for a 4th gear pull (see attached). Now I feel that the numbers are low on this but it was 98 deg outside with a very high % humidity. What do you guys think? From the logs timing is off, due to heat? 317/380. Good friend was with me (sure he'll post in here) who did the same tune as me this week and he put down almost identical numbers (we were only off by I think 2hp and .7tq haha).

Thoughts?



Just trying to get dynos along the way and feedback on logs to make sure everything is good at each step. Next dyno pulls will be with DCI, DPs and FMIC for power mods.

(Sorry the 'dyno' log file is big as I forgot to stop logging, just delete the extra junk haha)

Any feedback would be great!!

[VNeBLOB42]

i am no expert, but how was your dyno set up?

open hood
fans
Fuel Type
etc.?

your dyno log has 160's - 170 charge air temp. WOW!! never seen it that high.

your street pull seems to be more normal with a stock IC, similar to mine.

there are alot of good resources on here, you will get some good help for sure.

[rader1]

Logs look good, except for the IATs... 160+ degrees is going to(and did) kill your power.

~40whp/~80wtq gain is still decent for tune only especially in that heat.

[redefined]

Open hood. 2 fans, not super dooooper fans though

Highest I saw was 182 air temp..eeeek. Dang Georgia!

Yup FMIC was being put together and coated, should ship Monday. Next dyno day will be fmic/dci/dp's

Originally Posted by rader1

Logs look good, except for the IATs... 160+ degrees is going to(and did) kill your power.

~40whp/~80wtq gain is still decent for tune only especially in that heat.

Any educated guess on what kind of power drops I got from the temps? Just curious if I'm on par with most.

[VNeBLOB42]

Originally Posted by redefined

Open hood. 2 fans, not super dooooper fans though

Highest I saw was 182 air temp..eeeek. Dang Georgia!

Yup FMIC was being put together and coated, should ship Monday. Next dyno day will be fmic/dci/dp's

please post the update on here, i am curious. My baseline was 230whp on a dyno dynamics. was Feb. going to do another dyno after my FMIC.

[rader1]

Originally Posted by redefined

Open hood. 2 fans, not super dooooper fans though

Highest I saw was 182 air temp..eeeek. Dang Georgia!

Yup FMIC was being put together and coated, should ship Monday. Next dyno day will be fmic/dci/dp's

The FMIC should help, you're definitely giving up a lot of power with the timing as low as it it. You're roughly 5 degrees of timing across the whole rev range below what you would be in cooler temps.

[redefined]

Originally Posted by VNeBLOB42

please post the update on here, i am curious. My baseline was 230whp on a dyno dynamics. was Feb. going to do another dyno after my FMIC.

I will. Going to make a 'build thread' soon which will have all my charts in it as well.

Originally Posted by rader1

The FMIC should help, you're definitely giving up a lot of power with the timing as low as it it. You're roughly 5 degrees of timing across the whole rev range below what you would be in cooler temps.

Which should all be due to the temp right? Not having any 'issues' with the car?

[rader1]

Originally Posted by redefined

Any educated guess on what kind of power drops I got from the temps? Just curious if I'm on par with most.

It's hard to say for sure but i would feel comfortable saying 15-20whp is possible

[rader1]

Originally Posted by redefined

Which should all be due to the temp right? Not having any 'issues' with the car?

No throttle closures, no timing corrections(one correction on the street log, but one or two corrections isn't a problem), solid AFRs/fuel trims, and no goofy boost oscillations.

Everything looks good except for the IATs which is killing your timing(there is a DME table for timing reduction due to high IATs.)

[6MTE92]

Next time let the car sit outside with the good open for a good 30-45 minutes before they pull it up.

[redefined]

Originally Posted by 6MTE92

Next time let the car sit outside with the good open for a good 30-45 minutes before they pull it up.

We did. Dynoed my buddies car first so mine sat with hood open in the shade. I drove 45 min to get there on the too hwy.

[6MTE92]

Thats crazy high IATs. I was on the dyno in orlando this past tuesday and my beginning IAT's were just above 100. If you dyno'd with cooler IAT's i think you would pickup ATLEAST 15-20whp. Like Rader mentioned, the DME reduces load target(Boost), and timing by a factor once you start having high IAT's like that. Essentially your car was dyno'd in the fetile position while sucking its thumb.

[redefined]

Yeah pretty much what I figured. After my buddy went I debated not even doing the runs with my car. Oh well, good to know I guess! Now if the summer would just end already!!!

[Danny_K]

Here is my stock vs v401 stg 1 aggresive. I was with redefined last night. We let the cars cool as much as possible. It was over 100 ambient, in the shade.

Will post my logs too shortly, but IAT was 180, and timing was getting pulled like CRAZYYY. So this SHOULD be a worst case scenario (weather wise) for a tuned car for those of you who are contemplating Cobb.

[6MTE92]

Must Purchase Meeeeettthhhhhaaaaannnnoooollll Injection!

[Danny_K]

Originally Posted by 6MTE92

Must Purchase Meeeeettthhhhhaaaaannnnoooollll Injection!

what are you using to control the meth?

[redefined]

Originally Posted by Danny_K

what are you using to control the meth?

ProTune w/ Cobb seems to be working good now. I take back what I said last night

[rader1]

Originally Posted by Danny_K

what are you using to control the meth?

He's using an HFS-4 kit and I am using an HFS-3 kit.
Hopefully, I'll have some ATP numbers to share soon.

[6MTE92]

Originally Posted by Danny_K

what are you using to control the meth?

http://howertonengineering.com/produ...quamist-hfs-4/

One of the only (the only?) Direct injection capable meth kits that has a failsafe that works with Cobb, or any other flash tune.

Whereas JB4 and PROcede switch the map when the flow sensor trips, the hfs-4 will dump boost via wastegate control. Only problem is the pricetag, but of all the mods i have purchased for my car so far, the hfs-4 and Howerton engineering's two gallon meth tank is bar far the most superior in terms of quality, performance, and exceeding expectations. I would REALLY urge anyone with Cobb considering Meth to purchase this kit.

[redefined]

Meth - researching it now. That Aquamist seems like it's the real deal and the price shows!! If it's really the only safe thing I guess that's my bet. Trying to figure out if any of the others work with Cobb, not looking good so far eh?

There is a gas station by me that has a 100oct pump but they have been out of it for 6+mths. I went today and ask if they are getting it back and they said it doesn't look good. Shell wants them to buy XXXX amount and they only want XX amount and won't budge

[rader1]

Originally Posted by redefined

Meth - researching it now. That Aquamist seems like it's the real deal and the price shows!! If it's really the only safe thing I guess that's my bet. Trying to figure out if any of the others work with Cobb, not looking good so far eh?

There is a gas station by me that has a 100oct pump but they have been out of it for 6+mths. I went today and ask if they are getting it back and they said it doesn't look good. Shell wants them to buy XXXX amount and they only want XX amount and won't budge

Any meth kit will "work."

You install the kit and it sprays meth. You then have the car tuned tuned for the meth.

Certain tuners are really muddying the waters around here with the way they talk about meth.

Think of it like race gas, you fill the tank with race gas and then you have a tuner tune the car with the fuel in the tank. He'll be able to run more timing and more boost because of the available octane.

Meth works the same way, except you also get the added benefits of IAT reduction.

Honestly though, I would go with the Aquamist kit. Meth isn't really something that pays in the long run to be a cheap ass with.

[redefined]

Originally Posted by rader1

Any meth kit will "work."

You install the kit and it sprays meth. You then have the car tuned tuned for the meth.

Certain tuners are really muddying the waters around here with the way they talk about meth.

Think of it like race gas, you fill the tank with race gas and then you have a tuner tune the car with the fuel in the tank. He'll be able to run more timing and more boost because of the available octane.

Meth works the same way, except you also get the added benefits of IAT reduction.

Honestly though, I would go with the Aquamist kit. Meth isn't really something that pays in the long run to be a cheap ass with.

Understood and the last sentence is why I'm looking at all the kits. I don't mind paying top dollar for a quality product but I still want to know what makes that product better than XYZ product requiring more of my mulah. Ya know?