I have the TRE from JSD. The difference in acceleration is huge. Problem is that the spark knock that I only had in 4th and 5th gear is now present in 1st to 3rd. I am in California and we can only get 91 octane gas. From what I have read most people who can get 93 octane dont have the spark know problem.
I proved to myself that octane is the problem by using octane booster and having the knock go almost completely away. From what I have read here, the bully controller may be able to get rid of the problem through a richer air fuel mixture. I ordered one this week and hope it works.
Short story is... the TRE works so good, I am willing to spend more money to fix the spark knock. Most people have not had this problem is the consensus.
If you don't have any knock in 4th and 5th before the TRE, you wont have any after it.
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