Thread: no top end power

My JWT ecu was pretty rich on my b13 VE.

Stock maf, stock ecu, ve injectors? Better get a tune asap. You really don't want to wash out that oil and catch a rod knock. Get a tune.

Jwts are always ricj, not to ricj but just safe rich.

Stratton.

X 2

The only way to tell is using a wideband, otherwise is hit and miss

It's all speculation since the OP has not given enough info. No dyno graph,no afr graph, no snap shot of data scan, or engine codes. Trying to top out in 4th gear is a great way to hurt an untuned engine.

it was from 5+yrs ago. i deleted my posts, but some folks quoted me before i had a chance to do so. it turned into a super BIATCH session but you can still get the "just" of it.
ecu-jwt VE vs stock dyno results!! - Page 4 - SR20 Forum

Shit my car ran GREAT with the ve inj, de maf/ecu combo and 22ish degrees ign timing. I noticed no gain going to a calum ecu with his "base" tune. Granted, this was with 20ve exh/16ve intake cam combo, but I was shocked at how well the motor ran with the de ecu!

i think the reason for running so much timing is because of how low of timing the stock de maps have.. atleast from what i've seen anyway.. nistune comes with a ton of different maps

advancing the base timing to ~22*-23* is effectively getting closer to replicating the VE ecu timing map. there's a post over there by Calum himself stating how much more timing there is in the factory ve map compared to the factory de map. some parts as much as 17* more!