I just recently switched from a Buschur Intake and MAF pipe back to stock airbox. I installed a Wideband gauge and realized my AFRs were at 10:1. on 3rd gear pulls. My boost is set at 20.5psi for pump gas. Since this is on a Flash and I have no way to lean the mixture, can I increase boost a little until I am in the 12:1 - 12.5:1 range? I am running a GT30R so I have freedom to increase boost. I always hear that you shouldn’t run more than 21 psi on pump gas. I am assuming that is if you are already as lean as you can go, but since I am extremely rich, am I ok to do so? I am open for suggestions?

 

What gear did you do your pull in? Our cars run richer in the higher gears. i.e. 5th will run richer than 4th. 4th will run richer than 3rd.

 

When you swap intakes - obviously the tuning is significantly effected

In the best case you want to have the car tuned for the particular intake you are going to run

As you know, I am in chicago this weekend and you could have arranged a custom tuning appointment.

Also as you know as a custom tuned customer you are entitled to free of charge through the mail updates for base flashes.

Also, as you know, there are no base flashes available for your very unusual set up which to the best of my recollection includes some RNR turbo upgrade

Absent some assistance from myself - ANY piggy back device such as SAFC or emanage can be used to adjust your a/f to match the new intake

 

For the kind gentleman who asked prior to Mr. Dynoflash - The pulls were made in 3rd gear.

Mr Dynoflash, I agree, ideally the best case is to get another custom tune. I was hping since I already spent $800 with you already you would take care of me.
I knew you were in town. I communicated my dilemma to you to see what you could do, you never offered any free help or even reduced rate help.

Due to your difficulties trying to tune a GT30R with Buschur Stage 4 Parts, the original tune wasn’t quite optimal. We both knew I wasnt getting the power I should out of the setup.

Is it possible to get a free Base flash with only Revlimiter and injector scaling done since I am a repeat customer?

Chris

 

is ur car still for sale?

 

Yep, it sure is.

 

Can anyone confirm if its ok to raise boost in order to achieve optimal AFRs?

 

NO - that is not a good idea

 

Actually, the aftermarket cone filter will make the car leaner through the middle of the power band

With the proper correction for such an intake the carf will go significantly richer with a stock intake and same tuning in the middle of the power band

 

You cant just keep raising the boost until it gets leaner because you need more octane to go above 21 psi safely

 

Sadly a custom turbo set up like yours (an old RNR unit ) presents a LOT of difficulties from a tuning stand point with the stock ecu

The only way to tackle the problem - PROPERLY - is to hook up ALL my testing gear and tune the car on a custom basis

This process now takes me one full hour of work to hook up and remove all the equipment ALONE - the tuning time is additional

You are a good guy and I feel for your situation, however the original problems relate back to poor parts design, and or instalation and while regratable dont result from my product.

The RNR turbo kit has come a LONG way and the current units work very well indeed, your set up never seemed to function well and the MAF sesnor, turbo and intake pipe combo did not work very well for driveability if I can recall. Also oil leaks and other problems were present which I can no longer recall as it has been well over a year since I first tuned it.

IF I RECALL our PM conversations of the past few weeks, I offered you a greatly reduced rate for a updated custom tune to re-tune the car for your new intake. However, you stated that you did not want to spend ANY additional money on this car.

Sorry that you are having problems with your car, however, you must realize that I incur significant expense in the form of air fare, hotels and rental cars to travel out to chicago and I have to charge for my time.

The best I can offer you at this time is to adjust your current tuning map for you - FREE of charge - if you ship it to me with some data of where it is rich and how much. This way I can get you closer on the a/f. Just send it into the address on my web site along with the information about what your wideband reads at various rpm points.

 

True - any you have to go over 30 psi till it starts to run out of resolution on the MAF sensor

It will only go lean when you riase boost if the injectors are undersized or if the fuel pump is maxed out

 

Whats the reason why 21psi is the limit? If there is concise information already out there on the physics explanation of why not, please point me there. I run 93 octane all the time. How high can I go with street driving?

 

The effective cyl pressure is the limitation on pump gas

After a certain point the mixture will pre ignite or knock as the piston is on the compression stroke

21 psi is a reasonable limit for pump gas

Of course some cars can run more boost - however it is a case by case sensrio

Only way to really tell is look at the plugs, watch the knock sensor and use knock ears

 

Hi,

This is really not a good time to be insulting the moderators. What is your relationship with TTP engineering? One could certainly argue your issues with Al are commercially based. Remove your signature reference to TTP (a non-registered vendor) and knock off the vendor chasing.

If you cannot then your account privileges will be removed. PM me with any questions. Thanks.

Speedlimit...