▀▄ eas | ESS Tuning G1/G1+ Intercooled Supercharger Systems now released!

[DRLane]

Originally Posted by tom @ eas

Updates happen periodically through the lifespan, just like M3 models themselves - we're documenting along the way as the OP has the plastic tanks pictured when the kits were introduced. We've even had a few systems with CSF heat exchangers on installs.

Performance is similar between both, other than bringing all major components being manufactured in house and the exchangers essentially being bulletproof.

Hi Tom, the new exchanger mounts in front of the oil cooler? Any issues on the track with oil temps?

[tom @ eas]

Originally Posted by DRLane

Hi Tom, the new exchanger mounts in front of the oil cooler? Any issues on the track with oil temps?

Revised heat exchanger mounts in same location.

Oil temps are dependent on a number of variables (mostly driving style) in which a larger oil cooler or custom misting system adds some benefit.

[DRLane]

Originally Posted by tom @ eas

Revised heat exchanger mounts in same location.

Oil temps are dependent on a number of variables (mostly driving style) in which a larger oil cooler or custom misting system adds some benefit.

I understand that oil is variable dependent. But assuming you tested this on the same car before after. No general conclusions?

[tom @ eas]

Originally Posted by DRLane

I understand that oil is variable dependent. But assuming you tested this on the same car before after. No general conclusions?

Very little different in performance between the two units, as explained earlier in post #154. Look into a larger oil cooler if looking to lower temps even more.

[astris]

Originally Posted by tom @ eas

Updates happen periodically through the lifespan, just like M3 models themselves - we're documenting along the way as the OP has the plastic tanks pictured when the kits were introduced. We've even had a few systems with CSF heat exchangers on installs.

Performance is similar between both, other than bringing all major components being manufactured in house and the exchangers essentially being bulletproof.

Love my G1 kit so far. Only issue I've have is a rough, bouncing idle that occurs as soon as cold start ends, before the car warms up. Once it's up to temp, it's great.

Have you come across this at all? At first ESS told me it's normal and the car just needs to adapt. I have 1500 miles on the kit, so not an adaption issue. Then they mentioned it could be that one of the plugs could have issues until it's warmed up. Plugs were brand new, installed when the kit was installed.

Have you ever come across this?

[Properstyle]

Originally Posted by astris

Love my G1 kit so far. Only issue I've have is a rough, bouncing idle that occurs as soon as cold start ends, before the car warms up. Once it's up to temp, it's great.

Have you come across this at all? At first ESS told me it's normal and the car just needs to adapt. I have 1500 miles on the kit, so not an adaption issue. Then they mentioned it could be that one of the plugs could have issues until it's warmed up. Plugs were brand new, installed when the kit was installed.

Have you ever come across this?

Try disconnecting the recirc tube off the BOV on the side of the manifold so that it is not routing back in to the intake. and report back.

[Usef_Afande]

Originally Posted by astris

Love my G1 kit so far. Only issue I've have is a rough, bouncing idle that occurs as soon as cold start ends, before the car warms up. Once it's up to temp, it's great.

Have you come across this at all? At first ESS told me it's normal and the car just needs to adapt. I have 1500 miles on the kit, so not an adaption issue. Then they mentioned it could be that one of the plugs could have issues until it's warmed up. Plugs were brand new, installed when the kit was installed.

Have you ever come across this?

Sounds very similar symptom that I had until I changed the temperature coolant sensor

[astris]

Originally Posted by Usef_Afande

Sounds very similar symptom that I had until I changed the temperature coolant sensor

Idle was rock solid until I had the G1 kit installed. So doubt it's the coolant sensor. I suppose it could be a plug since they were changed at the same time. Cold start - solid. Post cold start - bouncy. Warm - solid. Zero codes.

I have a P3 gauge with analog boost sensor, t tapped in line to the bov. With these cooler winter temps, I'm probably averaging around 7 psi at redline, which seems pretty damn good since I'm running the 91oct pulley/tune (with 92oct gas).

So besides the bouncing cold idle for a bit, car seems to run great!

[///Mobbin]

I used to have a rough idle when I'd fill my gas tank up, turned out to be the fuel breather valve, ~$100 part, sits under the intake box in the V, could be that but strange it didn't happen before.

[tom @ eas]

Originally Posted by astris

Love my G1 kit so far. Only issue I've have is a rough, bouncing idle that occurs as soon as cold start ends, before the car warms up. Once it's up to temp, it's great.

Have you come across this at all? At first ESS told me it's normal and the car just needs to adapt. I have 1500 miles on the kit, so not an adaption issue. Then they mentioned it could be that one of the plugs could have issues until it's warmed up. Plugs were brand new, installed when the kit was installed.

Have you ever come across this?

How many miles on the car? When were O2s last changed and what type of fuels (and/or additives) are you using?

[astris]

Originally Posted by tom @ eas

How many miles on the car? When were O2s last changed and what type of fuels (and/or additives) are you using?

Pre cat O2's are the originals (45k miles on the car). Car has test pipes. I run 92oct from whenever. Gas doesn't seem to make a difference. Ran several gallons of 100oct (around 96oct overall) the other day for fun. No difference in the cold idle.

The cold idle issue started exactly when the new plugs and supercharger were installed. Zero issues before, immediate cold idle issue post install. So logic seems to point to either plugs or related to the sc.

Goin to do new O2's just for the heck of it next time the car is in the shop. Was debating doing new plugs again just to rule them out.

Also hadn't driven the car in about 2 weeks, then drove it yesterday. Cold idle was actually more steady than usual and outside temps were about the same (~45°).

Overall, it's a minor issue since it runs flawlessly once up to temp, but it would be nice to find the source.

[tom @ eas]

Originally Posted by astris

Pre cat O2's are the originals (45k miles on the car). Car has test pipes. I run 92oct from whenever. Gas doesn't seem to make a difference. Ran several gallons of 100oct (around 96oct overall) the other day for fun. No difference in the cold idle.

The cold idle issue started exactly when the new plugs and supercharger were installed. Zero issues before, immediate cold idle issue post install. So logic seems to point to either plugs or related to the sc.

Goin to do new O2's just for the heck of it next time the car is in the shop. Was debating doing new plugs again just to rule them out.

Also hadn't driven the car in about 2 weeks, then drove it yesterday. Cold idle was actually more steady than usual and outside temps were about the same (~45°).

Overall, it's a minor issue since it runs flawlessly once up to temp, but it would be nice to find the source.

Assuming you're using stock (LKR8AP) plugs, it shouldn't cause idle hunting, plugs should be changed every 10K on supercharged cars.

I would go ahead and change O2s and follow up. OEM only.

[astris]

Originally Posted by tom @ eas

Assuming you're using stock (LKR8AP) plugs, it shouldn't cause idle hunting, plugs should be changed every 10K on supercharged cars.

I would go ahead and change O2s and follow up. OEM only.

Sounds like a plan. ESS was a thinking maybe one of the new plugs was dodgy. Will def do pre cat O2's when it's back in the shop for some maintenance stuff in a month or two.

[astris]

Originally Posted by tom @ eas

Assuming you're using stock (LKR8AP) plugs, it shouldn't cause idle hunting, plugs should be changed every 10K on supercharged cars.

I would go ahead and change O2s and follow up. OEM only.

Oh, curious, is there a specific issue with the Bosch O2's? Price difference between Bosch and the genuine BMW is crazy. Genuine is $150 ish more per sensor. $220 vs $540 is a pretty big price gap for 2 sensors.

[pbonsalb]

No need to buy from BMW but buy ones made by the company that makes them for BMW. Could be Bosch of NTK. I forget which. There is a thread somewhere with the OEM for many BMW parts. I avoid the dealer unless absolutely necessary.

[tom @ eas]

Originally Posted by astris

Oh, curious, is there a specific issue with the Bosch O2's? Price difference between Bosch and the genuine BMW is crazy. Genuine is $150 ish more per sensor. $220 vs $540 is a pretty big price gap for 2 sensors.

Use OEM only on plugs and O2s on supercharged applications.

EDIT: ESS confirms Bosch also, which might save a little $$ since you are not paying licensing from BMW. Stays away from remanufactured or other brands, they will most likely lead to issues down the road.

[astris]

Originally Posted by tom @ eas

Use OEM only on plugs and O2s on supercharged applications.

EDIT: ESS confirms Bosch also, which might save a little $$ since you are not paying licensing from BMW. Stays away from remanufactured or other brands, they will most likely lead to issues down the road.

Awesome. In that case I'll pick up some NGK LKR8AP plugs and Bosch pre-cat O2's since those appear to be the actual OE parts.

[Usef_Afande]

Originally Posted by tom @ eas

Some quick shots of the new heat exchangers included with the ESS G1 kits:

[IMG]https://live.staticflickr.com/65535/...6e5b720b_b.jpg[/IMG]

[IMG]https://live.staticflickr.com/65535/...5dd45c63_b.jpg[/IMG]

Hi Tom,
In the ESS website they still show the heat exchangers with the black housing.
How can i ensure that we are getting the new housing if I'm making an order?

[tom @ eas]

Originally Posted by Usef_Afande

Hi Tom,
In the ESS website they still show the heat exchangers with the black housing.
How can i ensure that we are getting the new housing if I'm making an order?

The new heat exchangers were just released, pictures will be updated soon. We'll make sure you get the latest and greatest after your order is placed with us.

[Usef_Afande]

@Tom

What about for the G1 kit owners, is it possible to upgrade to the G1+ kit?

[tom @ eas]

Originally Posted by Usef_Afande

@Tom

What about for the G1 kit owners, is it possible to upgrade to the G1+ kit?

Yes

[ARC550]

Hey Tom!

i know a few people with the G1+ kit and they run the GTS DCT flash and have no issues... why do some have issues with the SC kit and others don't? odd...
Have you seen this also?