abmobil
Well-Known Member
- Joined
- Nov 19, 2016
- Threads
- 32
- Messages
- 237
- Reaction score
- 101
- Location
- United States
- Vehicle(s)
- DD 13 Nissan Titan Wknd ride 17 Mustang GT
- Thread starter
- #1
Some of you may remember that I had some growing pains after my VMP GEN2R install. Not sure what was wrong but they suspected a vacuum leak in the beginning. Even though it seemed tight I decided to remove my JLT 125MM CAI and Reinstall. After that the logs looked much better according to VMP.
Since then I have had 4 more tune revisions. Car runs good but the hot start has always been off. Sometimes it will cough and stumble just a bit at hot start up and other times it’s perfect. Sometimes cold starts are weird too. With my 9th revision yesterday the cold start issue seems better but now the idle is probably 900. I feel like they just raised the idle on the last revision. Doesn’t seem like a proper fix to me.
The idle still moves around a little bit when coming to a stop light but since it’s idling higher it has “ smoothed “ it a bit.
Also when occasionally accelerating at a steady pace but not WOT the car seems to hit a plateau in the 3,000 to 4,000 rpm range. I am not bad mouthing VMP at all. They seem like a great company and they are very responsive. They seem to be an elite in the Mustang world. Why is it taking so long to get my car right? My setup is pretty mild and they do this all day. I was thinking 1 or 2 revisions would have this thing exactly where it needs to be.
Since then I have had 4 more tune revisions. Car runs good but the hot start has always been off. Sometimes it will cough and stumble just a bit at hot start up and other times it’s perfect. Sometimes cold starts are weird too. With my 9th revision yesterday the cold start issue seems better but now the idle is probably 900. I feel like they just raised the idle on the last revision. Doesn’t seem like a proper fix to me.
The idle still moves around a little bit when coming to a stop light but since it’s idling higher it has “ smoothed “ it a bit.
Also when occasionally accelerating at a steady pace but not WOT the car seems to hit a plateau in the 3,000 to 4,000 rpm range. I am not bad mouthing VMP at all. They seem like a great company and they are very responsive. They seem to be an elite in the Mustang world. Why is it taking so long to get my car right? My setup is pretty mild and they do this all day. I was thinking 1 or 2 revisions would have this thing exactly where it needs to be.
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