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Miss At 2500-3000 Rpm

CeJay

By CeJay,
in General Maintenance

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CeJay Grand Master

CeJay

Posted
Posted

Ok I did a search for this and I couldn't find anything.

Since my turbo blew and I had a gt2835 pro s put on I've been having the following issue.

engines an r32 spec rb25de-t (non turbo block been turboed)

At mild acceleration say 35 -50%, almost like clockwork I get a miss between 2500-3000 rpm. Doesn't matter what gear. But the rpms get irregular and the boost fluctuates up and down.

Issue does not happen when your flooring it or doing hard accleration.

Cars running a VIPEC and initially had to replace an IAT sensor which was giving faulty readings. Didn't have any other errors come up on the ecu after the sensor was replaced. Although I've gotten a new laptop and havent had the chance to load the vipec software on it.

Didn't have this issue before the turbo blew or I had the ecu replaced.

Car does not have the problem when being tuned on the dyno. Tuner couldn't recreate problem.

Car is running 550cc power enterprise injectors

the turbo

and the vipec ecu.

The coilpacks are splitfires, about 18 months to 2 years old.

Any ideas on what to check? As I'm stumped and starting to get pissed off with the problem.

Check what the spark plugs are gapped at?

And yes hit me over the head if you can find a thread on this issue, as I couldn't. :(

thanks for any help.

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buckets

Posted
Posted
Ok I did a search for this and I couldn't find anything.

Since my turbo blew and I had a gt2835 pro s put on I've been having the following issue.

engines an r32 spec rb25de-t (non turbo block been turboed)

At mild acceleration say 35 -50%, almost like clockwork I get a miss between 2500-3000 rpm. Doesn't matter what gear. But the rpms get irregular and the boost fluctuates up and down.

Issue does not happen when your flooring it or doing hard accleration.

Cars running a VIPEC and initially had to replace an IAT sensor which was giving faulty readings. Didn't have any other errors come up on the ecu after the sensor was replaced. Although I've gotten a new laptop and havent had the chance to load the vipec software on it.

Didn't have this issue before the turbo blew or I had the ecu replaced.

Car does not have the problem when being tuned on the dyno. Tuner couldn't recreate problem.

Car is running 550cc power enterprise injectors

the turbo

and the vipec ecu.

The coilpacks are splitfires, about 18 months to 2 years old.

Any ideas on what to check? As I'm stumped and starting to get pissed off with the problem.

Check what the spark plugs are gapped at?

And yes hit me over the head if you can find a thread on this issue, as I couldn't. :laugh:

thanks for any help.

hey mate

yeah check you plugs, they should be gapped to .8mm.

i know you've upgraded your coilpacks but id check em out again, just to make sure its not any chance they're arking out.

i'd have a look at your afm (if you got one), might be a bit of solder on the inside has broken off therefore your not getting any readings.

hope this helped a bit

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