SR20DET ECU question..

[tyblue]

if i have an sr20det s13 blacktop can i buy, and use an s13 redtop ecu?

[compactfean]

Yes I have a red rop and am using a blacktop ecu.

[solidglobe]

ii have 2 sr ecu if you havent found one. one 62 and one j4. 62 will be easier to upgrade compared to j4

[Black Lion]

Yes I have a red rop and am using a blacktop ecu.

what is the difference in redtop and blacktop?

[tyblue]

ive looked around but havent bought anything yet, how much are you wanting for it??

[tyblue]

just the valve cover i guess haha good point!

[Black Lion]

just the valve cover i guess haha good point!

and they charge you more money for that ha

[DuckyD]

There are three types of S13 SR's.Redtop used 62/63 ECU and had a skinny-type o2 sensor on the turbo outlet.

Blacktop used an E5/E6 ECU and had a fat-type o2 sensor. Aside from the black valvecover, it also has cooling fins on the front of the head. Has 54c pistons (supposedly stronger), a better oil pickup, and a different AC compressor.

The above two SR ECU's are interchangable for the most part. Different o2 sensors can cause rich condition but isn't terribly bad.

Blacktop Type-X used a J4 ECU. Pinouts were different and J4 ECU will not work other S13 SR's unlesss repinned (and vice-versa).

[solidglobe]

ive looked around but havent bought anything yet, how much are you wanting for it??

$150 for either one. but the 62 will be easier to upgrade and the j4 will have better stock map mey need pin changes if using older s3 harness. about 6-7 wires