Custom GM/Chevy Basemap Eeprom on a Genuine SST 27SF512 Chip.

We will contact you asap after order to get info/specs on your vehicle/engine setup to aid in the creation of your chip.

NOTE: Basemaps are not meant to get your setup 100% functional and tuned. They are meant to get your setup RUNNING and functioning enough to get to a tuner to properly tune your vehicle. Unless you are just doing EGR/VATS delete, etc and there are no major changes to the engine. Otherwise, with engine changes there needs to be further in person tuning. Sometimes depending on changes, YES the basemaps work perfectly fine and there are no issues, but some things are more easily diagosed with the proper tools IN PERSON by a Tuner.

You will need an adapter for your ECM to use these flash chips

Adapter will depend on ECM model.

Adapters listed here:

If your ECM has the wide Memcal/Eprom like this:
 
You will need our GM1 Memory Adapter

if your ECM has an eprom soldered into the main board, like this:

You will need our GM2 Memory Adapter and either install it, or mail it in to us to have it installed.

if you want to read your current tune and have that modified, you would need this to read a stock memcal:

BoostedNW Memcal adapter header

Basemaps are calculated starting maps, built from the info you provide and data on similar vehicles and setups. They are not final tunes—every car is different, even with identical parts. A full custom tune is always required for safety, drivability, and performance.

Basemaps are only meant to get your car running well enough to reach your tuner. Because many variables can affect results, we cannot guarantee the operation, safety, or performance of your vehicle on a basemap.

⚠️ Critical Information Requirement

It is your responsibility to provide complete and correct details in the order form. If details are missing, incorrect, or incomplete, your basemap may not function. We are not responsible for non-functional basemaps caused by lack of accurate information.

Since basemaps are custom-made, they are non-returnable/non-refundable(By purchasing you hereby accept these terms). However, if corrections are needed, you may ship the chip back to us for an update. You will be responsible for return shipping.

This makes it extremely important to provide all of the correct information before your order ships.

Reminder: Every car needs full tuning—this is only a starting point.