Originally Posted by
TBSteck
Hi, this is Tim, the owner of the car Terminator is talking about.
First I would like to thank Terminator to care enough to seek out others opinions. Obviously I would like to figure this out too.
Some quick history of car:
- 08 Solstice GXP - bone stock until these tunes in late December '14
- Purchased new mainly to autocross and hillclimb but use it on the street as a daily driver. I say daily driver but not driven much as a daily driver.
- It just turned over 36,000 miles, as you tell for a 7 year old car don't driven a lot on the street as a daily driver.
- Purchased all upgrades from DDMWorks
+ Lighten Flywheel and clutch by DDMWorks
+ Solstice GXP Mach Exhaust
+ Kappa-2.0L High Flow Catless downpipe
+ Solstice/Sky 2.0L LNF Intercooler by DDMWorks
+ KW Coilover Variant 3
+ HP Tuners VCM Suite Pro Package
- Dave from DDMWorks gave me a "temporary tune" so I could drive it after the upgrades were added.
This car never had a miss nor did it ever throw a DTC code before this upgrades and tunes.
Initially put in DDMWorks tune and had no misses at the 3000 +-500 RPM range.
Every tune from Terminator from the 1st one would miss at the range and only at the range. His tunes pulled good (except for the misses) ... well until that "very bad day". If I would put in DDMWorks tune back in, no missing at all. It had other issues but since that wasn't my base I didn't worry about that. Terminator did give me one tune that only missed a couple times in that RPM range with about 7-10 pulls through that range which was an amazing improvement since before it would always miss a lot through that range at 70%+ throttle given.
CDNITE you said it was "user error", what error could I have done? This car was only raced once on a very tight course with the payment cold and bald Hoosiers, so no real hard driving. And did a few pulls, mainly through that range with a few up close to redline but since I was on the street doing this, had to kill it when I was getting to the triple digit mark.
And I do understand this stuff a little bit, had LS1Edit and tuned a LSI Camaro from scratch by myself, which ran pretty good but I really kept a close eye on the WB #'s. I would have done this car but I don't have the time right now to learn the LNF engine w turbo - quite a bit different from the LSI engine which is why I wanted a professional to do it.
I'm going to get the engine taken a part so I can fix it. Any ideas on what I should look at or replace? Well, expect the pistons, I'm pretty sure there is a hole in one of them. The car was still drivable, I drove very slow home - about 5 miles, oh but the smoke.
I have every tune I was given and every log I ever did, if you would like to help out Terminator and me figure this out I would GLADLY send them to you.