Can Someone Explain My Tune? Out Of Puff?

[Frosty]

exactly and where do you spend most of your driving time...in the midrange or on the limiter....

no disagreement there

[Rekin]

Also have you done the throttle body coolant bypass mod?

It's very easy and can drop your intake temps but a few deg

It's one of my favorite mods cost nothing so free power!

Have not heard of this mod, searched it up now. Interesting!

Bring us your stock turbocharger if you don't mind lag on the little RB20. I will be interested to see when it runs out of puff on the new infinity high flow profiles.

pm'd

i made about 220wkw on rb20 with the same turbo tho it ran out off steam aswell....your not going to get anymore out of that its too small! ive also maxed a TD06 at 270wkw @ 17psi. Pumped 20psi into and picked up 50wkw in the mid range instantly but lost 2kw top end due to the turbo just not being able to flow up top

exactly what is happening here

Different dynos but there are loads of people running 220-240rwkws out of a 2530. I know Russ ran 21psi through his thing and made 23#rwkws for a long time before throwing his RB25 in. He couldnt get it to hold more than something like 16psi at redline as it would not hold boost.

For giggles replace the inlet pipe, blank off BOV and remove cat for tuning and go from there

Yeah thats what I was thinking, majority of people are getting 220kw~ and wanted to suss out what could be the issue. Mid range is always best, but would like to know why i'm short of the average result. Will be running car on another dyno shortly...

Still running stock rb20 bov, perhaps that could be leaking?

[cherring]

Still running stock rb20 bov, perhaps that could be leaking?

Unless it's faulty I doubt it, my one is running a stock BOV, no problems at all.

[Rekin]

Just recently had my car retuned with HKS2530 @ 19psi, retarded exhaust cam by 8degrees & Apexi Front mount intercooler

The result shown below: 207.8kw @ 11.5afr

Okay; sleeved the intake pipe, replaced all hose clamps & changed to colder sparkplugs.

Took the car back for a checkup.

As show below; knock sensor was acting funny and causing car to run in knock map. Trent reviewed the tune and fixed up the knock map.

He believes this was limiting the top-end power from last tune and hence was able to get more now.

From the charts; 216kw @ 16.5psi (unsure of why boost has dropped from 18psi? Will confirm with Trent...)

[STATUS]

^^ ignore the boost tell tales, sorry. (i did not have it on peak hold) It was left on live kpa from previous mapping duties..

The graphs are from all visits on one plot so no difference in boost. (red is first pull and is ALWAYS laggier due to less heat energy)

[Rekin]

^^ ignore the boost tell tales, sorry. (i did not have it on peak hold) It was left on live kpa from previous mapping duties..

The graphs are from all visits on one plot so no difference in boost. (red is first pull and is ALWAYS laggier due to less heat energy)

Legend, thanks for the clarification!

Thanks Trent!

Everyone, If your tuner can't answer your questions on Sau then you need to swap to Trent!

[STATUS]

Legend, thanks for the clarification!

Thanks Trent!

Everyone, If your tuner can't answer your questions on Sau then you need to swap to Trent!

haha dont get much time on here anymore unfortunately... under the pump atm

[femno]

Sweet.

As Roy said on Russmans RB20 we tried and tried to make the little 2530 hold more boost up top but it just blatantly refused. It was at the point where we didnt really care about the well being of the engine with plans for RB25, so we wound in 23psi, increasing midrange dramatically, nothing in the top end really. That made like 230 something, with mild cams.

It ended up lasting more than a couple of years of track abuse! Lean on it Pat! :-)

[Dan_J]

pat, did you also advance intake or just retard exhaust ?

[STATUS]

pat, did you also advance intake or just retard exhaust ?

tried combo of all + / - up to 10 degrees but typical of rb20's there is very little gain... retarded exhaust for best results.

[Rekin]

Sweet.

As Roy said on Russmans RB20 we tried and tried to make the little 2530 hold more boost up top but it just blatantly refused. It was at the point where we didnt really care about the well being of the engine with plans for RB25, so we wound in 23psi, increasing midrange dramatically, nothing in the top end really. That made like 230 something, with mild cams.

It ended up lasting more than a couple of years of track abuse! Lean on it Pat! :-)

haha, you are the devil! Not sure if I can put the rb20 though any more! The faulty knock sensor gave me a scare, luckily a cheap fix this time!

tried combo of all + / - up to 10 degrees but typical of rb20's there is very little gain... retarded exhaust for best results.

This man knows!